#5B88BB
Closest named color: Faded Blue (#658CBB). oklch(61.6% 0.092 252.4), rgb(91, 136, 187).
Aa
Black text reads best on this color (5.68:1).
About this color
#5B88BB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.092 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.017 away. Black text reads best on it, at 5.68:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.68:1 |
| White text | 3.69:1 |
Values
| HEX | #5B88BB |
| RGB | rgb(91, 136, 187) |
| HSL | hsl(212, 41%, 55%) |
| OKLCH | oklch(61.6% 0.092 252.4) |
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 #5B88BB | 3.69:1 | AA large text | Lc -69.9 | Content text, not long reading |
| Black text on #5B88BB | 5.68:1 | AA | Lc 39.7 | Non-text elements, placeholder text |
| #5B88BB text on white | 3.69:1 | AA large text | Lc 64.4 | Content text, not long reading |
| #5B88BB text on black | 5.68:1 | AA | Lc -37.3 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF3
oklch(93.7% 0.013 251.6)
-
Step 200
200
#CEDBEA
oklch(88.6% 0.025 251.9)
-
Step 300
300
#ACC3DE
oklch(80.9% 0.046 252.5)
-
Step 400
400
#80A4CD
oklch(70.7% 0.072 252.1)
-
Step 500
500 (this color)
#5B88BB
oklch(61.6% 0.092 252.4)
-
Step 600
600
#4576AC
oklch(55.6% 0.1 252.1)
-
Step 700
700
#376394
oklch(49.1% 0.093 252.5)
-
Step 800
800
#2E5178
oklch(42.7% 0.077 252.4)
-
Step 900
900
#294361
oklch(37.6% 0.061 252.9)
-
Step 950
950
#182839
oklch(27.1% 0.038 250.8)
#5B88BB 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) | #748ABD | 0.031 |
| Deuteranopia (no green cones) | #6881BA | 0.023 |
| Tritanopia (no blue cones) | #2A949A | 0.081 |
| Achromatopsia (no color) | #858585 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B88BB
#5B88BB
oklch(61.6% 0.092 252.4)
- #A77B42
#A77B42
oklch(61.5% 0.092 71.7)
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 #5B88BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.017
- Dusty Blue #5A86AD ΔE 0.021
- Off Blue #5684AE ΔE 0.022
- Cool Blue #4984B8 ΔE 0.023
- Steel Blue #4682B4 ΔE 0.031
- Silver Lake Blue #778DA9 ΔE 0.048
- Blue Grey #758DA3 ΔE 0.052
- Blue NCS #118AB2 ΔE 0.053
Use #5B88BB 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.