#508EBB
Closest named color: Faded Blue (#658CBB). oklch(62.4% 0.094 241.9), rgb(80, 142, 187).
Aa
Black text reads best on this color (5.92:1).
About this color
#508EBB is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.094 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.022 away. Black text reads best on it, at 5.92:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.92:1 |
| White text | 3.54:1 |
Values
| HEX | #508EBB |
| RGB | rgb(80, 142, 187) |
| HSL | hsl(205, 44%, 52%) |
| OKLCH | oklch(62.4% 0.094 241.9) |
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 #508EBB | 3.54:1 | AA large text | Lc -68.3 | Content text, not long reading |
| Black text on #508EBB | 5.92:1 | AA | Lc 41.2 | Non-text elements, placeholder text |
| #508EBB text on white | 3.54:1 | AA large text | Lc 62.8 | Content text, not long reading |
| #508EBB text on black | 5.92:1 | AA | Lc -38.8 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CBDCE9
oklch(88.6% 0.026 240.7)
-
Step 300
300
#A7C5DC
oklch(80.9% 0.046 241.2)
-
Step 400
400
#77A7CB
oklch(70.8% 0.074 241.5)
-
Step 500
500 (this color)
#508EBB
oklch(62.4% 0.094 241.9)
-
Step 600
600
#347AAA
oklch(55.7% 0.102 241.9)
-
Step 700
700
#266692
oklch(49% 0.096 242.5)
-
Step 800
800
#215476
oklch(42.8% 0.078 241.2)
-
Step 900
900
#21455F
oklch(37.6% 0.061 242.2)
-
Step 950
950
#142938
oklch(27.1% 0.039 241.3)
#508EBB 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) | #7A8EBD | 0.048 |
| Deuteranopia (no green cones) | #6C83BA | 0.040 |
| Tritanopia (no blue cones) | #00999D | 0.075 |
| Achromatopsia (no color) | #888888 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #508EBB
#508EBB
oklch(62.4% 0.094 241.9)
- #B07A49
#B07A49
oklch(62.4% 0.094 62)
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 #508EBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.022
- Dusty Blue #5A86AD ΔE 0.027
- Off Blue #5684AE ΔE 0.030
- Cool Blue #4984B8 ΔE 0.030
- Steel Blue #4682B4 ΔE 0.037
- Blue NCS #118AB2 ΔE 0.044
- Silver Lake Blue #778DA9 ΔE 0.049
- Blue Grey #758DA3 ΔE 0.052
Use #508EBB 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.