#1FB173
Closest named color: Bluey Green (#2BB179). oklch(67.3% 0.149 158.5), rgb(31, 177, 115).
Aa
Black text reads best on this color (7.59:1).
About this color
#1FB173 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.149 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Green (#2BB179), ΔE 0.010 away. Black text reads best on it, at 7.59:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Bluey Green (#2BB179) |
| Black text | 7.59:1 |
| White text | 2.76:1 |
Values
| HEX | #1FB173 |
| RGB | rgb(31, 177, 115) |
| HSL | hsl(155, 70%, 41%) |
| OKLCH | oklch(67.3% 0.149 158.5) |
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 #1FB173 | 2.76:1 | Fails | Lc -58.1 | Large or bold text, headings |
| Black text on #1FB173 | 7.59:1 | AAA | Lc 51.2 | Large or bold text, headings |
| #1FB173 text on white | 2.76:1 | Fails | Lc 52.8 | Large or bold text, headings |
| #1FB173 text on black | 7.59:1 | AAA | Lc -49.0 | Large or bold text, headings |
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
#EFF8F2
oklch(97.1% 0.012 157)
-
Step 100
100
#DCF0E3
oklch(93.7% 0.027 157.4)
-
Step 200
200
#BDE4CD
oklch(88.5% 0.051 159.3)
-
Step 300
300
#8BD3AA
oklch(80.8% 0.093 158.5)
-
Step 400
400 (this color)
#1FB173
oklch(67.3% 0.149 158.5)
-
Step 500
500
#00A367
oklch(63% 0.146 158.5)
-
Step 600
600
#008956
oklch(55.5% 0.129 158.6)
-
Step 700
700
#007348
oklch(49% 0.113 158.9)
-
Step 800
800
#005F3A
oklch(42.8% 0.099 158.5)
-
Step 900
900
#004F30
oklch(37.7% 0.087 158.9)
-
Step 950
950
#002F1B
oklch(26.9% 0.062 159.3)
#1FB173 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) | #AFA36F | 0.137 |
| Deuteranopia (no green cones) | #9F9777 | 0.134 |
| Tritanopia (no blue cones) | #00B0A1 | 0.066 |
| Achromatopsia (no color) | #9B9B9B | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1FB173
#1FB173
oklch(67.3% 0.149 158.5)
- #D06FB5
#D06FB5
oklch(67.4% 0.148 338.6)
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 #1FB173, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Green #2BB179 ΔE 0.010
- Jade Green #2BAF6A ΔE 0.011
- Green Teal #0CB577 ΔE 0.011
- Dark Seafoam #1FB57A ΔE 0.013
- Seaweed Green #35AD6B ΔE 0.013
- Medium Sea Green #3CB371 ΔE 0.015
- Dark Seafoam Green #3EAF76 ΔE 0.016
- Algae #54AC68 ΔE 0.029
Use #1FB173 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.