#63998C
Closest named color: Grey Teal (#5E9B8A). oklch(64.1% 0.061 177.4), rgb(99, 153, 140).
Aa
Black text reads best on this color (6.46:1).
About this color
#63998C is a medium-light, muted teal or cyan. In OKLCH its lightness is 64%, its chroma 0.061 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Teal (#5E9B8A), ΔE 0.009 away. Black text reads best on it, at 6.46:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Grey Teal (#5E9B8A) |
| Black text | 6.46:1 |
| White text | 3.24:1 |
Values
| HEX | #63998C |
| RGB | rgb(99, 153, 140) |
| HSL | hsl(166, 21%, 49%) |
| OKLCH | oklch(64.1% 0.061 177.4) |
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 #63998C | 3.24:1 | AA large text | Lc -65.1 | Content text, not long reading |
| Black text on #63998C | 6.46:1 | AA | Lc 44.4 | Non-text elements, placeholder text |
| #63998C text on white | 3.24:1 | AA large text | Lc 59.7 | Large or bold text, headings |
| #63998C text on black | 6.46:1 | AA | Lc -42.0 | Non-text elements, placeholder text |
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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CEDDD9
oklch(88.5% 0.017 178.2)
-
Step 300
300
#ADC7C0
oklch(80.8% 0.03 177.5)
-
Step 400
400
#81ABA0
oklch(70.7% 0.048 177)
-
Step 500
500 (this color)
#63998C
oklch(64.1% 0.061 177.4)
-
Step 600
600
#458073
oklch(55.6% 0.066 177.8)
-
Step 700
700
#366C60
oklch(49% 0.061 177.4)
-
Step 800
800
#2D584F
oklch(42.6% 0.051 178.6)
-
Step 900
900
#294941
oklch(37.8% 0.041 176.2)
-
Step 950
950
#192B26
oklch(27.2% 0.026 174.9)
#63998C 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) | #95938B | 0.064 |
| Deuteranopia (no green cones) | #8B8C8D | 0.060 |
| Tritanopia (no blue cones) | #529A95 | 0.019 |
| Achromatopsia (no color) | #8F8F8F | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63998C
#63998C
oklch(64.1% 0.061 177.4)
- #AC7D8D
#AC7D8D
oklch(64.1% 0.062 356.8)
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 #63998C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Teal #5E9B8A ΔE 0.009
- Dull Teal #5F9E8F ΔE 0.014
- Cadet Blue #5F9EA0 ΔE 0.028
- Sea #3C9992 ΔE 0.034
- Dusty Teal #4C9085 ΔE 0.038
- Green Grey #77926F ΔE 0.042
- Persian Green #2A9D8F ΔE 0.043
- Slate Green #658D6D ΔE 0.047
Use #63998C 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.