#04B181
Closest named color: Bluey Green (#2BB179). oklch(67.4% 0.141 165.3), rgb(4, 177, 129).
Aa
Black text reads best on this color (7.61:1).
About this color
#04B181 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.141 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bluey Green (#2BB179), ΔE 0.013 away. Black text reads best on it, at 7.61:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.141) |
| Temperature | in between |
| Nearest name | Bluey Green (#2BB179) |
| Black text | 7.61:1 |
| White text | 2.75:1 |
Values
| HEX | #04B181 |
| RGB | rgb(4, 177, 129) |
| HSL | hsl(163, 96%, 35%) |
| OKLCH | oklch(67.4% 0.141 165.3) |
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 #04B181 | 2.75:1 | Fails | Lc -57.9 | Large or bold text, headings |
| Black text on #04B181 | 7.61:1 | AAA | Lc 51.4 | Large or bold text, headings |
| #04B181 text on white | 2.75:1 | Fails | Lc 52.6 | Large or bold text, headings |
| #04B181 text on black | 7.61:1 | AAA | Lc -49.2 | 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
#EFF8F3
oklch(97.1% 0.012 162.1)
-
Step 100
100
#DBF0E6
oklch(93.7% 0.026 165.6)
-
Step 200
200
#BCE4D1
oklch(88.5% 0.049 164.9)
-
Step 300
300
#88D3B3
oklch(80.9% 0.088 165.5)
-
Step 400
400 (this color)
#04B181
oklch(67.4% 0.141 165.3)
-
Step 500
500
#00A276
oklch(63.1% 0.132 165.5)
-
Step 600
600
#008862
oklch(55.5% 0.117 165.2)
-
Step 700
700
#007352
oklch(49.2% 0.104 164.9)
-
Step 800
800
#005E43
oklch(42.7% 0.089 165.5)
-
Step 900
900
#004E37
oklch(37.6% 0.079 165.5)
-
Step 950
950
#002F20
oklch(27.1% 0.056 165.8)
#04B181 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) | #ADA37E | 0.139 |
| Deuteranopia (no green cones) | #9B9684 | 0.134 |
| Tritanopia (no blue cones) | #00B1A4 | 0.051 |
| Achromatopsia (no color) | #9C9C9C | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #04B181
#04B181
oklch(67.4% 0.141 165.3)
- #D270AA
#D270AA
oklch(67.4% 0.141 345.1)
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 #04B181, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluey Green #2BB179 ΔE 0.013
- Dark Seafoam #1FB57A ΔE 0.018
- Dark Seafoam Green #3EAF76 ΔE 0.020
- Green Teal #0CB577 ΔE 0.021
- Medium Sea Green #3CB371 ΔE 0.028
- Seaweed Green #35AD6B ΔE 0.028
- Jade Green #2BAF6A ΔE 0.029
- Jade #1FA774 ΔE 0.029
Use #04B181 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.