#5F999F
Closest named color: Cadet Blue (#5F9EA0). oklch(64.5% 0.061 204.1), rgb(95, 153, 159).
Aa
Black text reads best on this color (6.54:1).
About this color
#5F999F is a medium-light, muted teal or cyan. In OKLCH its lightness is 65%, its chroma 0.061 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.014 away. Black text reads best on it, at 6.54:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.54:1 |
| White text | 3.20:1 |
Values
| HEX | #5F999F |
| RGB | rgb(95, 153, 159) |
| HSL | hsl(186, 25%, 50%) |
| OKLCH | oklch(64.5% 0.061 204.1) |
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 #5F999F | 3.20:1 | AA large text | Lc -64.6 | Content text, not long reading |
| Black text on #5F999F | 6.54:1 | AA | Lc 44.8 | Non-text elements, placeholder text |
| #5F999F text on white | 3.20:1 | AA large text | Lc 59.2 | Large or bold text, headings |
| #5F999F text on black | 6.54:1 | AA | Lc -42.5 | 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
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CDDDDE
oklch(88.6% 0.017 201.4)
-
Step 300
300
#ABC7C9
oklch(81% 0.03 201.9)
-
Step 400
400
#7DAAAE
oklch(70.7% 0.048 203)
-
Step 500
500 (this color)
#5F999F
oklch(64.5% 0.061 204.1)
-
Step 600
600
#3E7F85
oklch(55.6% 0.067 203.4)
-
Step 700
700
#306B71
oklch(49.1% 0.062 204.3)
-
Step 800
800
#29575C
oklch(42.7% 0.051 204.8)
-
Step 900
900
#26484B
oklch(37.7% 0.04 203)
-
Step 950
950
#172A2C
oklch(27% 0.025 204.3)
#5F999F 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) | #91949F | 0.062 |
| Deuteranopia (no green cones) | #868C9F | 0.057 |
| Tritanopia (no blue cones) | #449D9B | 0.027 |
| Achromatopsia (no color) | #909090 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F999F
#5F999F
oklch(64.5% 0.061 204.1)
- #B0807C
#B0807C
oklch(64.6% 0.06 24.3)
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 #5F999F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.014
- Dull Teal #5F9E8F ΔE 0.032
- Grey Teal #5E9B8A ΔE 0.034
- Sea #3C9992 ΔE 0.039
- Blue Grey #758DA3 ΔE 0.043
- Greyblue #77A1B5 ΔE 0.048
- Dusty Teal #4C9085 ΔE 0.049
- Silver Lake Blue #778DA9 ΔE 0.049
Use #5F999F 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.