#4C88BB
Closest named color: Cool Blue (#4984B8). oklch(60.8% 0.1 246.1), rgb(76, 136, 187).
Aa
Black text reads best on this color (5.54:1).
About this color
#4C88BB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.100 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.012 away. Black text reads best on it, at 5.54:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.54:1 |
| White text | 3.78:1 |
Values
| HEX | #4C88BB |
| RGB | rgb(76, 136, 187) |
| HSL | hsl(208, 45%, 52%) |
| OKLCH | oklch(60.8% 0.1 246.1) |
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 #4C88BB | 3.78:1 | AA large text | Lc -70.7 | Content text, not long reading |
| Black text on #4C88BB | 5.54:1 | AA | Lc 38.9 | Non-text elements, placeholder text |
| #4C88BB text on white | 3.78:1 | AA large text | Lc 65.2 | Content text, not long reading |
| #4C88BB text on black | 5.54:1 | AA | Lc -36.4 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CBDBEA
oklch(88.4% 0.027 246.4)
-
Step 300
300
#A7C4DF
oklch(80.8% 0.05 246.5)
-
Step 400
400
#78A6CF
oklch(70.8% 0.078 246.1)
-
Step 500
500 (this color)
#4C88BB
oklch(60.8% 0.1 246.1)
-
Step 600
600
#3578AF
oklch(55.5% 0.109 246.3)
-
Step 700
700
#276596
oklch(49.1% 0.101 245.9)
-
Step 800
800
#22537A
oklch(42.8% 0.084 245.6)
-
Step 900
900
#214562
oklch(37.8% 0.065 245.1)
-
Step 950
950
#142839
oklch(26.9% 0.041 245.8)
#4C88BB 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) | #7289BD | 0.043 |
| Deuteranopia (no green cones) | #637EBA | 0.034 |
| Tritanopia (no blue cones) | #00949A | 0.080 |
| Achromatopsia (no color) | #838383 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4C88BB
#4C88BB
oklch(60.8% 0.1 246.1)
- #AB763C
#AB763C
oklch(60.9% 0.1 66.4)
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 #4C88BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.012
- Steel Blue #4682B4 ΔE 0.020
- Off Blue #5684AE ΔE 0.021
- Dusty Blue #5A86AD ΔE 0.024
- Faded Blue #658CBB ΔE 0.030
- Blue NCS #118AB2 ΔE 0.039
- Water Blue #0E87CC ΔE 0.042
- Stormy Blue #507B9C ΔE 0.053
Use #4C88BB 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.