#03B58B
Closest named color: Dark Seafoam (#1FB57A). oklch(68.7% 0.138 168.6), rgb(3, 181, 139).
Aa
Black text reads best on this color (7.98:1).
About this color
#03B58B is a medium-light, moderately saturated green. In OKLCH its lightness is 69%, its chroma 0.138 and its hue 169°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Seafoam (#1FB57A), ΔE 0.023 away. Black text reads best on it, at 7.98:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Dark Seafoam (#1FB57A) |
| Black text | 7.98:1 |
| White text | 2.62:1 |
Values
| HEX | #03B58B |
| RGB | rgb(3, 181, 139) |
| HSL | hsl(166, 97%, 36%) |
| OKLCH | oklch(68.7% 0.138 168.6) |
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 #03B58B | 2.62:1 | Fails | Lc -55.7 | Large or bold text, headings |
| Black text on #03B58B | 7.98:1 | AAA | Lc 53.4 | Large or bold text, headings |
| #03B58B text on white | 2.62:1 | Fails | Lc 50.6 | Large or bold text, headings |
| #03B58B text on black | 7.98:1 | AAA | Lc -51.3 | 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
#EEF8F4
oklch(97.1% 0.012 170.3)
-
Step 100
100
#DBF0E7
oklch(93.7% 0.025 168.2)
-
Step 200
200
#BBE4D3
oklch(88.5% 0.049 168.1)
-
Step 300
300
#87D3B7
oklch(80.9% 0.086 168.9)
-
Step 400
400 (this color)
#03B58B
oklch(68.7% 0.138 168.6)
-
Step 500
500
#00A17B
oklch(63% 0.127 168.5)
-
Step 600
600
#008867
oklch(55.7% 0.112 168.2)
-
Step 700
700
#007256
oklch(49% 0.099 168.4)
-
Step 800
800
#005E46
oklch(42.8% 0.087 168)
-
Step 900
900
#004E3A
oklch(37.7% 0.076 168.5)
-
Step 950
950
#002F22
oklch(27.1% 0.054 168.9)
#03B58B 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) | #B0A889 | 0.139 |
| Deuteranopia (no green cones) | #9D9A8E | 0.134 |
| Tritanopia (no blue cones) | #00B6A9 | 0.043 |
| Achromatopsia (no color) | #A0A0A0 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03B58B
#03B58B
oklch(68.7% 0.138 168.6)
- #D874A8
#D874A8
oklch(68.7% 0.138 348.9)
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 #03B58B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Seafoam #1FB57A ΔE 0.023
- Bluey Green #2BB179 ΔE 0.023
- Green Teal #0CB577 ΔE 0.028
- Greeny Blue #42B395 ΔE 0.028
- Dark Seafoam Green #3EAF76 ΔE 0.029
- Green Blue #01C08D ΔE 0.032
- Medium Sea Green #3CB371 ΔE 0.034
- Seaweed Green #35AD6B ΔE 0.041
Use #03B58B 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.