#1BC974
Closest named color: Algae Green (#21C36F). oklch(73.6% 0.179 154.4), rgb(27, 201, 116).
Aa
Black text reads best on this color (9.65:1).
About this color
#1BC974 is a medium-light, vivid green. In OKLCH its lightness is 74%, its chroma 0.179 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Algae Green (#21C36F), ΔE 0.017 away. Black text reads best on it, at 9.65:1.
| Hue family | Greens |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.179) |
| Temperature | in between |
| Nearest name | Algae Green (#21C36F) |
| Black text | 9.65:1 |
| White text | 2.17:1 |
Values
| HEX | #1BC974 |
| RGB | rgb(27, 201, 116) |
| HSL | hsl(151, 76%, 45%) |
| OKLCH | oklch(73.6% 0.179 154.4) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #1BC974 | 2.17:1 | Fails | Lc -46.9 | Large or bold text, headings |
| Black text on #1BC974 | 9.65:1 | AAA | Lc 61.8 | Content text, not long reading |
| #1BC974 text on white | 2.17:1 | Fails | Lc 42.2 | Non-text elements, placeholder text |
| #1BC974 text on black | 9.65:1 | AAA | Lc -60.1 | Content text, not long reading |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 400.
-
Step 50
50
#EEF9F1
oklch(97.2% 0.016 154.5)
-
Step 100
100
#DAF1E0
oklch(93.7% 0.033 153.7)
-
Step 200
200
#BAE6C7
oklch(88.5% 0.062 154.3)
-
Step 300
300
#84D6A0
oklch(80.9% 0.112 154.3)
-
Step 400
400 (this color)
#1BC974
oklch(73.6% 0.179 154.4)
-
Step 500
500
#00A45C
oklch(63.1% 0.158 154.5)
-
Step 600
600
#008A4C
oklch(55.6% 0.139 154.3)
-
Step 700
700
#00743F
oklch(49.1% 0.123 154.3)
-
Step 800
800
#005F33
oklch(42.6% 0.106 154.6)
-
Step 900
900
#00502A
oklch(37.9% 0.094 154.5)
-
Step 950
950
#003017
oklch(27.1% 0.068 154.6)
#1BC974 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #C8B86E | 0.156 |
| Deuteranopia (no green cones) | #B6AA7A | 0.155 |
| Tritanopia (no blue cones) | #00C7B4 | 0.089 |
| Achromatopsia (no color) | #B0B0B0 | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BC974
#1BC974
oklch(73.6% 0.179 154.4)
- #EB79D7
#EB79D7
oklch(73.6% 0.179 334.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #1BC974, closest first.
No curated palette has a color within ΔE 0.04 of #1BC974.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Algae Green #21C36F ΔE 0.017
- Seaweed #18D17B ΔE 0.022
- Dark Mint Green #20C073 ΔE 0.026
- Dark Mint #48C072 ΔE 0.028
- Greenblue #23C48B ΔE 0.037
- Shamrock Green #02C14D ΔE 0.045
- Cool Green #33B864 ΔE 0.046
- Green Blue #01C08D ΔE 0.048
Use #1BC974 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.