#1BB389
Closest named color: Bluey Green (#2BB179). oklch(68.3% 0.134 167.8), rgb(27, 179, 137).
Aa
Black text reads best on this color (7.85:1).
About this color
#1BB389 is a medium-light, moderately saturated green. In OKLCH its lightness is 68%, its chroma 0.134 and its hue 168°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Green (#2BB179), ΔE 0.021 away. Black text reads best on it, at 7.85:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.134) |
| Temperature | in between |
| Nearest name | Bluey Green (#2BB179) |
| Black text | 7.85:1 |
| White text | 2.67:1 |
Values
| HEX | #1BB389 |
| RGB | rgb(27, 179, 137) |
| HSL | hsl(163, 74%, 40%) |
| OKLCH | oklch(68.3% 0.134 167.8) |
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 #1BB389 | 2.67:1 | Fails | Lc -56.6 | Large or bold text, headings |
| Black text on #1BB389 | 7.85:1 | AAA | Lc 52.6 | Large or bold text, headings |
| #1BB389 text on white | 2.67:1 | Fails | Lc 51.4 | Large or bold text, headings |
| #1BB389 text on black | 7.85:1 | AAA | Lc -50.5 | 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
#EFF8F4
oklch(97.1% 0.011 167.8)
-
Step 100
100
#DBEFE7
oklch(93.5% 0.024 169.9)
-
Step 200
200
#BDE4D3
oklch(88.6% 0.047 167)
-
Step 300
300
#8AD2B6
oklch(80.8% 0.083 167.8)
-
Step 400
400 (this color)
#1BB389
oklch(68.3% 0.134 167.8)
-
Step 500
500
#00A17A
oklch(63% 0.128 168)
-
Step 600
600
#008866
oklch(55.6% 0.113 167.6)
-
Step 700
700
#007255
oklch(49% 0.1 167.6)
-
Step 800
800
#005E46
oklch(42.8% 0.087 168)
-
Step 900
900
#004E39
oklch(37.6% 0.077 167.4)
-
Step 950
950
#002F21
oklch(27.1% 0.055 167.3)
#1BB389 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) | #AEA687 | 0.134 |
| Deuteranopia (no green cones) | #9D998C | 0.130 |
| Tritanopia (no blue cones) | #00B4A7 | 0.043 |
| Achromatopsia (no color) | #9E9E9E | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BB389
#1BB389
oklch(68.3% 0.134 167.8)
- #D475A8
#D475A8
oklch(68.3% 0.133 347.8)
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 #1BB389, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Green #2BB179 ΔE 0.021
- Dark Seafoam #1FB57A ΔE 0.023
- Dark Seafoam Green #3EAF76 ΔE 0.025
- Greeny Blue #42B395 ΔE 0.027
- Green Teal #0CB577 ΔE 0.028
- Medium Sea Green #3CB371 ΔE 0.033
- Green Blue #01C08D ΔE 0.037
- Seaweed Green #35AD6B ΔE 0.038
Use #1BB389 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.