#5C99AB
Closest named color: Cadet Blue (#5F9EA0). oklch(64.8% 0.069 218.8), rgb(92, 153, 171).
Aa
Black text reads best on this color (6.59:1).
About this color
#5C99AB is a medium-light, muted teal or cyan. In OKLCH its lightness is 65%, its chroma 0.069 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.026 away. Black text reads best on it, at 6.59:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.59:1 |
| White text | 3.18:1 |
Values
| HEX | #5C99AB |
| RGB | rgb(92, 153, 171) |
| HSL | hsl(194, 32%, 52%) |
| OKLCH | oklch(64.8% 0.069 218.8) |
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 #5C99AB | 3.18:1 | AA large text | Lc -64.3 | Content text, not long reading |
| Black text on #5C99AB | 6.59:1 | AA | Lc 45.2 | Large or bold text, headings |
| #5C99AB text on white | 3.18:1 | AA large text | Lc 58.9 | Large or bold text, headings |
| #5C99AB text on black | 6.59:1 | AA | Lc -42.9 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3EBEE
oklch(93.5% 0.009 222.1)
-
Step 200
200
#CCDCE1
oklch(88.4% 0.019 218.4)
-
Step 300
300
#AAC6CF
oklch(80.9% 0.033 219.2)
-
Step 400
400
#7BA9B7
oklch(70.7% 0.053 218.6)
-
Step 500
500 (this color)
#5C99AB
oklch(64.8% 0.069 218.8)
-
Step 600
600
#397E91
oklch(55.7% 0.075 218.6)
-
Step 700
700
#2B6A7B
oklch(49.1% 0.069 218.5)
-
Step 800
800
#255664
oklch(42.6% 0.057 219.3)
-
Step 900
900
#244752
oklch(37.6% 0.045 220.5)
-
Step 950
950
#162A30
oklch(27.1% 0.028 219)
#5C99AB 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) | #8D96AC | 0.058 |
| Deuteranopia (no green cones) | #818CAB | 0.054 |
| Tritanopia (no blue cones) | #369F9F | 0.042 |
| Achromatopsia (no color) | #909090 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5C99AB
#5C99AB
oklch(64.8% 0.069 218.8)
- #B48170
#B48170
oklch(64.9% 0.068 39.2)
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 #5C99AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.026
- Blue Grey #758DA3 ΔE 0.040
- Greyblue #77A1B5 ΔE 0.041
- Silver Lake Blue #778DA9 ΔE 0.042
- Dull Teal #5F9E8F ΔE 0.049
- Sea #3C9992 ΔE 0.050
- Faded Blue #658CBB ΔE 0.051
- Grey Teal #5E9B8A ΔE 0.052
Use #5C99AB 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.