#63A09F
Closest named color: Cadet Blue (#5F9EA0). oklch(66.4% 0.063 194.4), rgb(99, 160, 159).
Aa
Black text reads best on this color (7.05:1).
About this color
#63A09F is a medium-light, muted teal or cyan. In OKLCH its lightness is 66%, its chroma 0.063 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.008 away. Black text reads best on it, at 7.05:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.05:1 |
| White text | 2.97:1 |
Values
| HEX | #63A09F |
| RGB | rgb(99, 160, 159) |
| HSL | hsl(179, 24%, 51%) |
| OKLCH | oklch(66.4% 0.063 194.4) |
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 #63A09F | 2.97:1 | Fails | Lc -61.6 | Content text, not long reading |
| Black text on #63A09F | 7.05:1 | AAA | Lc 47.8 | Large or bold text, headings |
| #63A09F text on white | 2.97:1 | Fails | Lc 56.2 | Large or bold text, headings |
| #63A09F text on black | 7.05:1 | AAA | Lc -45.5 | 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
#CDDDDC
oklch(88.5% 0.017 192.3)
-
Step 300
300
#ABC7C6
oklch(80.9% 0.03 193.9)
-
Step 400
400
#7CABAA
oklch(70.7% 0.05 194.4)
-
Step 500
500 (this color)
#63A09F
oklch(66.4% 0.063 194.4)
-
Step 600
600
#3C807F
oklch(55.6% 0.069 194.1)
-
Step 700
700
#2D6C6C
oklch(49.1% 0.064 195.3)
-
Step 800
800
#275858
oklch(42.7% 0.053 195.4)
-
Step 900
900
#254948
oklch(37.8% 0.042 193.2)
-
Step 950
950
#162B2A
oklch(27.1% 0.027 191.8)
#63A09F 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) | #999A9F | 0.067 |
| Deuteranopia (no green cones) | #8E92A0 | 0.063 |
| Tritanopia (no blue cones) | #4AA39F | 0.023 |
| Achromatopsia (no color) | #969696 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63A09F
#63A09F
oklch(66.4% 0.063 194.4)
- #B78487
#B78487
oklch(66.4% 0.063 15)
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 #63A09F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.008
- Dull Teal #5F9E8F ΔE 0.024
- Grey Teal #5E9B8A ΔE 0.032
- Greyblue #77A1B5 ΔE 0.042
- Sea #3C9992 ΔE 0.046
- Bluegrey #85A3B2 ΔE 0.051
- Persian Green #2A9D8F ΔE 0.053
- Bluey Grey #89A0B0 ΔE 0.054
Use #63A09F 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.