#03B59D
Closest named color: Greeny Blue (#42B395). oklch(69.2% 0.126 178.7), rgb(3, 181, 157).
Aa
Black text reads best on this color (8.10:1).
About this color
#03B59D is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 69%, its chroma 0.126 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.020 away. Black text reads best on it, at 8.10:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 8.10:1 |
| White text | 2.59:1 |
Values
| HEX | #03B59D |
| RGB | rgb(3, 181, 157) |
| HSL | hsl(172, 97%, 36%) |
| OKLCH | oklch(69.2% 0.126 178.7) |
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 #03B59D | 2.59:1 | Fails | Lc -55.1 | Large or bold text, headings |
| Black text on #03B59D | 8.10:1 | AAA | Lc 54.0 | Large or bold text, headings |
| #03B59D text on white | 2.59:1 | Fails | Lc 50.0 | Large or bold text, headings |
| #03B59D text on black | 8.10:1 | AAA | Lc -51.9 | 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
#EEF8F5
oklch(97.1% 0.011 176.3)
-
Step 100
100
#DBEFEA
oklch(93.6% 0.022 179.2)
-
Step 200
200
#BBE3D9
oklch(88.4% 0.044 178.4)
-
Step 300
300
#86D2C1
oklch(80.9% 0.08 178.4)
-
Step 400
400 (this color)
#03B59D
oklch(69.2% 0.126 178.7)
-
Step 500
500
#00A08A
oklch(63.2% 0.116 178.3)
-
Step 600
600
#008674
oklch(55.5% 0.101 178.9)
-
Step 700
700
#007161
oklch(49.1% 0.09 178.4)
-
Step 800
800
#005D4F
oklch(42.8% 0.079 177.8)
-
Step 900
900
#004D42
oklch(37.6% 0.069 179)
-
Step 950
950
#002E27
oklch(27% 0.049 179.5)
#03B59D 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) | #ADA99C | 0.133 |
| Deuteranopia (no green cones) | #9A9B9F | 0.127 |
| Tritanopia (no blue cones) | #00B8AE | 0.024 |
| Achromatopsia (no color) | #A1A1A1 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #03B59D
#03B59D
oklch(69.2% 0.126 178.7)
- #DA799B
#DA799B
oklch(69.3% 0.126 358.5)
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 #03B59D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.020
- Light Sea Green #20B2AA ΔE 0.025
- Topaz #13BBAF ΔE 0.028
- Green Blue #01C08D ΔE 0.045
- Bluey Green #2BB179 ΔE 0.048
- Dark Seafoam #1FB57A ΔE 0.049
- Dark Seafoam Green #3EAF76 ΔE 0.051
- Green Teal #0CB577 ΔE 0.054
Use #03B59D 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.