#508B9F
Closest named color: Dusty Blue (#5A86AD). oklch(60.4% 0.069 221.9), rgb(80, 139, 159).
Aa
Black text reads best on this color (5.53:1).
About this color
#508B9F is a medium-dark, muted teal or cyan. In OKLCH its lightness is 60%, its chroma 0.069 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.032 away. Black text reads best on it, at 5.53:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.53:1 |
| White text | 3.79:1 |
Values
| HEX | #508B9F |
| RGB | rgb(80, 139, 159) |
| HSL | hsl(195, 33%, 47%) |
| OKLCH | oklch(60.4% 0.069 221.9) |
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 #508B9F | 3.79:1 | AA large text | Lc -70.9 | Content text, not long reading |
| Black text on #508B9F | 5.53:1 | AA | Lc 38.7 | Non-text elements, placeholder text |
| #508B9F text on white | 3.79:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #508B9F text on black | 5.53:1 | AA | Lc -36.3 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEE
oklch(93.5% 0.009 222.1)
-
Step 200
200
#CDDCE2
oklch(88.5% 0.018 223.6)
-
Step 300
300
#AAC6D0
oklch(80.9% 0.033 221.4)
-
Step 400
400
#7CA9B9
oklch(70.8% 0.054 221.9)
-
Step 500
500 (this color)
#508B9F
oklch(60.4% 0.069 221.9)
-
Step 600
600
#3B7D93
oklch(55.6% 0.075 222.5)
-
Step 700
700
#2D697D
oklch(49% 0.069 222.9)
-
Step 800
800
#265666
oklch(42.7% 0.058 222.6)
-
Step 900
900
#244753
oklch(37.7% 0.045 222.5)
-
Step 950
950
#162A30
oklch(27.1% 0.028 219)
#508B9F 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) | #7F88A0 | 0.056 |
| Deuteranopia (no green cones) | #737F9F | 0.051 |
| Tritanopia (no blue cones) | #259191 | 0.045 |
| Achromatopsia (no color) | #838383 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #508B9F
#508B9F
oklch(60.4% 0.069 221.9)
- #A57461
#A57461
oklch(60.4% 0.068 42.1)
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 #508B9F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.032
- Off Blue #5684AE ΔE 0.036
- Steel #738595 ΔE 0.041
- Grey Blue #647D8E ΔE 0.043
- Teal Blue #01889F ΔE 0.044
- Blue Grey #758DA3 ΔE 0.044
- Light Slate Gray #778899 ΔE 0.045
- Steel Grey #6F828A ΔE 0.045
Use #508B9F 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.