#63A588
Closest named color: Dull Teal (#5F9E8F). oklch(66.9% 0.081 164.4), rgb(99, 165, 136).
Aa
Black text reads best on this color (7.26:1).
About this color
#63A588 is a medium-light, moderately saturated green. In OKLCH its lightness is 67%, its chroma 0.081 and its hue 164°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dull Teal (#5F9E8F), ΔE 0.027 away. Black text reads best on it, at 7.26:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.081) |
| Temperature | in between |
| Nearest name | Dull Teal (#5F9E8F) |
| Black text | 7.26:1 |
| White text | 2.88:1 |
Values
| HEX | #63A588 |
| RGB | rgb(99, 165, 136) |
| HSL | hsl(154, 27%, 52%) |
| OKLCH | oklch(66.9% 0.081 164.4) |
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 #63A588 | 2.88:1 | Fails | Lc -60.4 | Content text, not long reading |
| Black text on #63A588 | 7.26:1 | AAA | Lc 49.0 | Large or bold text, headings |
| #63A588 text on white | 2.88:1 | Fails | Lc 55.1 | Large or bold text, headings |
| #63A588 text on black | 7.26:1 | AAA | Lc -46.7 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E1EDE7
oklch(93.5% 0.015 164.7)
-
Step 200
200
#C9DFD4
oklch(88.4% 0.028 164.3)
-
Step 300
300
#A3CBB8
oklch(80.8% 0.05 164.7)
-
Step 400
400 (this color)
#63A588
oklch(66.9% 0.081 164.4)
-
Step 500
500
#429D79
oklch(63.1% 0.103 164.4)
-
Step 600
600
#158762
oklch(55.5% 0.112 164.7)
-
Step 700
700
#007351
oklch(49.2% 0.104 164.3)
-
Step 800
800
#0B5D42
oklch(42.6% 0.086 164.4)
-
Step 900
900
#164D38
oklch(37.8% 0.068 164.1)
-
Step 950
950
#0F2D21
oklch(27% 0.043 164.6)
#63A588 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) | #A39C87 | 0.081 |
| Deuteranopia (no green cones) | #98958A | 0.077 |
| Tritanopia (no blue cones) | #52A59D | 0.032 |
| Achromatopsia (no color) | #989898 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63A588
#63A588
oklch(66.9% 0.081 164.4)
- #B981A1
#B981A1
oklch(66.9% 0.081 344.3)
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 #63A588, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Teal #5F9E8F ΔE 0.027
- Tea #65AB7C ΔE 0.028
- Greeny Grey #7EA07A ΔE 0.032
- Grey Teal #5E9B8A ΔE 0.032
- Dusty Green #76A973 ΔE 0.038
- Grey Green #86A17D ΔE 0.039
- Greeny Blue #42B395 ΔE 0.042
- Cadet Blue #5F9EA0 ΔE 0.047
Use #63A588 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.