#508FA4
Closest named color: Dusty Blue (#5A86AD). oklch(61.6% 0.072 221.7), rgb(80, 143, 164).
Aa
Black text reads best on this color (5.80:1).
About this color
#508FA4 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 62%, its chroma 0.072 and its hue 222°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.034 away. Black text reads best on it, at 5.80:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.80:1 |
| White text | 3.61:1 |
Values
| HEX | #508FA4 |
| RGB | rgb(80, 143, 164) |
| HSL | hsl(195, 34%, 48%) |
| OKLCH | oklch(61.6% 0.072 221.7) |
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 #508FA4 | 3.61:1 | AA large text | Lc -69.1 | Content text, not long reading |
| Black text on #508FA4 | 5.80:1 | AA | Lc 40.4 | Non-text elements, placeholder text |
| #508FA4 text on white | 3.61:1 | AA large text | Lc 63.6 | Content text, not long reading |
| #508FA4 text on black | 5.80:1 | AA | Lc -38.0 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3ECEF
oklch(93.7% 0.01 219.6)
-
Step 200
200
#CCDCE2
oklch(88.4% 0.019 222.2)
-
Step 300
300
#A9C6D1
oklch(80.9% 0.035 222.7)
-
Step 400
400
#79A9BA
oklch(70.7% 0.057 221.9)
-
Step 500
500 (this color)
#508FA4
oklch(61.6% 0.072 221.7)
-
Step 600
600
#367E94
oklch(55.7% 0.079 221.1)
-
Step 700
700
#286A7E
oklch(49.1% 0.073 221.3)
-
Step 800
800
#235667
oklch(42.6% 0.061 223)
-
Step 900
900
#224753
oklch(37.6% 0.047 221.5)
-
Step 950
950
#152A31
oklch(27.1% 0.03 221.5)
#508FA4 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) | #838CA5 | 0.060 |
| Deuteranopia (no green cones) | #7682A4 | 0.054 |
| Tritanopia (no blue cones) | #1E9696 | 0.047 |
| Achromatopsia (no color) | #868686 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #508FA4
#508FA4
oklch(61.6% 0.072 221.7)
- #AB7763
#AB7763
oklch(61.7% 0.072 41.9)
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 #508FA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.034
- Off Blue #5684AE ΔE 0.040
- Blue Grey #758DA3 ΔE 0.041
- Steel #738595 ΔE 0.045
- Silver Lake Blue #778DA9 ΔE 0.046
- Light Slate Gray #778899 ΔE 0.046
- Faded Blue #658CBB ΔE 0.046
- Blue NCS #118AB2 ΔE 0.047
Use #508FA4 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.