#03B587
Closest named color: Dark Seafoam (#1FB57A). oklch(68.6% 0.141 166.7), rgb(3, 181, 135).
Aa
Black text reads best on this color (7.96:1).
About this color
#03B587 is a medium-light, vivid green. In OKLCH its lightness is 69%, its chroma 0.141 and its hue 167°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Seafoam (#1FB57A), ΔE 0.018 away. Black text reads best on it, at 7.96:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.141) |
| Temperature | in between |
| Nearest name | Dark Seafoam (#1FB57A) |
| Black text | 7.96:1 |
| White text | 2.63:1 |
Values
| HEX | #03B587 |
| RGB | rgb(3, 181, 135) |
| HSL | hsl(164, 97%, 36%) |
| OKLCH | oklch(68.6% 0.141 166.7) |
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 #03B587 | 2.63:1 | Fails | Lc -55.9 | Large or bold text, headings |
| Black text on #03B587 | 7.96:1 | AAA | Lc 53.3 | Large or bold text, headings |
| #03B587 text on white | 2.63:1 | Fails | Lc 50.7 | Large or bold text, headings |
| #03B587 text on black | 7.96:1 | AAA | Lc -51.2 | 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
#EEF8F4
oklch(97.1% 0.012 170.3)
-
Step 100
100
#DBF0E6
oklch(93.7% 0.026 165.6)
-
Step 200
200
#BBE4D2
oklch(88.5% 0.049 166.8)
-
Step 300
300
#87D3B4
oklch(80.8% 0.088 166.5)
-
Step 400
400 (this color)
#03B587
oklch(68.6% 0.141 166.7)
-
Step 500
500
#00A278
oklch(63.2% 0.13 166.5)
-
Step 600
600
#008865
oklch(55.6% 0.114 167)
-
Step 700
700
#007254
oklch(49% 0.101 166.9)
-
Step 800
800
#005E44
oklch(42.7% 0.088 166.3)
-
Step 900
900
#004E38
oklch(37.6% 0.078 166.4)
-
Step 950
950
#002F20
oklch(27.1% 0.056 165.8)
#03B587 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) | #B0A785 | 0.140 |
| Deuteranopia (no green cones) | #9E9A8A | 0.135 |
| Tritanopia (no blue cones) | #00B6A8 | 0.047 |
| Achromatopsia (no color) | #9F9F9F | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03B587
#03B587
oklch(68.6% 0.141 166.7)
- #D773AB
#D773AB
oklch(68.5% 0.141 346.7)
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 #03B587, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Seafoam #1FB57A ΔE 0.018
- Bluey Green #2BB179 ΔE 0.019
- Green Teal #0CB577 ΔE 0.022
- Dark Seafoam Green #3EAF76 ΔE 0.025
- Medium Sea Green #3CB371 ΔE 0.029
- Green Blue #01C08D ΔE 0.031
- Greeny Blue #42B395 ΔE 0.033
- Jade Green #2BAF6A ΔE 0.036
Use #03B587 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.