#639993
Closest named color: Grey Teal (#5E9B8A). oklch(64.3% 0.058 187), rgb(99, 153, 147).
Aa
Black text reads best on this color (6.50:1).
About this color
#639993 is a medium-light, muted teal or cyan. In OKLCH its lightness is 64%, its chroma 0.058 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Teal (#5E9B8A), ΔE 0.018 away. Black text reads best on it, at 6.50:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Grey Teal (#5E9B8A) |
| Black text | 6.50:1 |
| White text | 3.22:1 |
Values
| HEX | #639993 |
| RGB | rgb(99, 153, 147) |
| HSL | hsl(173, 21%, 49%) |
| OKLCH | oklch(64.3% 0.058 187) |
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 #639993 | 3.22:1 | AA large text | Lc -64.9 | Content text, not long reading |
| Black text on #639993 | 6.50:1 | AA | Lc 44.6 | Non-text elements, placeholder text |
| #639993 text on white | 3.22:1 | AA large text | Lc 59.4 | Large or bold text, headings |
| #639993 text on black | 6.50:1 | AA | Lc -42.3 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CEDDDB
oklch(88.6% 0.016 187.3)
-
Step 300
300
#ADC7C3
oklch(80.9% 0.029 185.4)
-
Step 400
400
#81AAA5
oklch(70.7% 0.045 186.9)
-
Step 500
500 (this color)
#639993
oklch(64.3% 0.058 187)
-
Step 600
600
#447F79
oklch(55.5% 0.063 187)
-
Step 700
700
#356C66
oklch(49.2% 0.059 186.2)
-
Step 800
800
#2D5853
oklch(42.8% 0.049 185.8)
-
Step 900
900
#294845
oklch(37.7% 0.037 187.9)
-
Step 950
950
#182A28
oklch(26.9% 0.024 187)
#639993 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) | #949393 | 0.063 |
| Deuteranopia (no green cones) | #8A8C94 | 0.059 |
| Tritanopia (no blue cones) | #509B97 | 0.018 |
| Achromatopsia (no color) | #8F8F8F | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #639993
#639993
oklch(64.3% 0.058 187)
- #AD7F87
#AD7F87
oklch(64.4% 0.058 7.3)
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 #639993, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Teal #5E9B8A ΔE 0.018
- Dull Teal #5F9E8F ΔE 0.018
- Cadet Blue #5F9EA0 ΔE 0.020
- Sea #3C9992 ΔE 0.034
- Dusty Teal #4C9085 ΔE 0.041
- Persian Green #2A9D8F ΔE 0.046
- Green Grey #77926F ΔE 0.050
- Blue Grey #758DA3 ΔE 0.053
Use #639993 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.