#63AAA4
Closest named color: Cadet Blue (#5F9EA0). oklch(69% 0.072 188.7), rgb(99, 170, 164).
Aa
Black text reads best on this color (7.81:1).
About this color
#63AAA4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 69%, its chroma 0.072 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.035 away. Black text reads best on it, at 7.81:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 7.81:1 |
| White text | 2.68:1 |
Values
| HEX | #63AAA4 |
| RGB | rgb(99, 170, 164) |
| HSL | hsl(175, 29%, 53%) |
| OKLCH | oklch(69% 0.072 188.7) |
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 #63AAA4 | 2.68:1 | Fails | Lc -57.2 | Large or bold text, headings |
| Black text on #63AAA4 | 7.81:1 | AAA | Lc 52.0 | Large or bold text, headings |
| #63AAA4 text on white | 2.68:1 | Fails | Lc 52.0 | Large or bold text, headings |
| #63AAA4 text on black | 7.81:1 | AAA | Lc -49.8 | 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 400.
-
Step 50
50
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEB
oklch(93.7% 0.013 185.1)
-
Step 200
200
#C7DFDC
oklch(88.5% 0.026 187.6)
-
Step 300
300
#A0CBC6
oklch(81% 0.046 187.5)
-
Step 400
400 (this color)
#63AAA4
oklch(69% 0.072 188.7)
-
Step 500
500
#369B94
oklch(63% 0.092 188.6)
-
Step 600
600
#00857E
oklch(55.6% 0.097 188.3)
-
Step 700
700
#00706A
oklch(49.1% 0.085 188.3)
-
Step 800
800
#005C57
oklch(42.8% 0.074 188.4)
-
Step 900
900
#0D4C48
oklch(37.8% 0.06 188.4)
-
Step 950
950
#0B2C2A
oklch(26.9% 0.038 189.5)
#63AAA4 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) | #A3A3A4 | 0.077 |
| Deuteranopia (no green cones) | #969AA5 | 0.072 |
| Tritanopia (no blue cones) | #45ADA8 | 0.023 |
| Achromatopsia (no color) | #9E9E9E | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63AAA4
#63AAA4
oklch(69% 0.072 188.7)
- #C38992
#C38992
oklch(69% 0.072 8.9)
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 #63AAA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.035
- Dull Teal #5F9E8F ΔE 0.040
- Light Sea Green #20B2AA ΔE 0.042
- Greyblue #77A1B5 ΔE 0.047
- Greeny Blue #42B395 ΔE 0.047
- Grey Teal #5E9B8A ΔE 0.050
- Bluegrey #85A3B2 ΔE 0.050
- Topaz #13BBAF ΔE 0.056
Use #63AAA4 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.