#63A19B
Closest named color: Cadet Blue (#5F9EA0). oklch(66.5% 0.065 187.9), rgb(99, 161, 155).
Aa
Black text reads best on this color (7.10:1).
About this color
#63A19B is a medium-light, muted teal or cyan. In OKLCH its lightness is 67%, its chroma 0.065 and its hue 188°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.014 away. Black text reads best on it, at 7.10:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.10:1 |
| White text | 2.95:1 |
Values
| HEX | #63A19B |
| RGB | rgb(99, 161, 155) |
| HSL | hsl(174, 25%, 51%) |
| OKLCH | oklch(66.5% 0.065 187.9) |
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 #63A19B | 2.95:1 | Fails | Lc -61.3 | Content text, not long reading |
| Black text on #63A19B | 7.10:1 | AAA | Lc 48.0 | Large or bold text, headings |
| #63A19B text on white | 2.95:1 | Fails | Lc 56.0 | Large or bold text, headings |
| #63A19B text on black | 7.10:1 | AAA | Lc -45.8 | 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 500.
-
Step 50
50
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CDDDDB
oklch(88.5% 0.017 187.8)
-
Step 300
300
#AAC8C4
oklch(80.9% 0.033 186.7)
-
Step 400
400
#7CABA6
oklch(70.6% 0.051 187.9)
-
Step 500
500 (this color)
#63A19B
oklch(66.5% 0.065 187.9)
-
Step 600
600
#3B817B
oklch(55.7% 0.071 187.8)
-
Step 700
700
#2D6D67
oklch(49.2% 0.066 186.9)
-
Step 800
800
#275954
oklch(42.8% 0.055 186.7)
-
Step 900
900
#254946
oklch(37.7% 0.042 188.6)
-
Step 950
950
#162B29
oklch(27.1% 0.027 187.9)
#63A19B 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) | #9B9B9B | 0.069 |
| Deuteranopia (no green cones) | #90939C | 0.065 |
| Tritanopia (no blue cones) | #4BA49F | 0.021 |
| Achromatopsia (no color) | #969696 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63A19B
#63A19B
oklch(66.5% 0.065 187.9)
- #B7838C
#B7838C
oklch(66.4% 0.065 7.5)
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 #63A19B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.014
- Dull Teal #5F9E8F ΔE 0.019
- Grey Teal #5E9B8A ΔE 0.028
- Sea #3C9992 ΔE 0.045
- Greyblue #77A1B5 ΔE 0.048
- Persian Green #2A9D8F ΔE 0.051
- Greeny Grey #7EA07A ΔE 0.051
- Grey Green #86A17D ΔE 0.055
Use #63A19B 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.