#5B90CB
Closest named color: Faded Blue (#658CBB). oklch(64.1% 0.106 252.1), rgb(91, 144, 203).
Aa
Black text reads best on this color (6.29:1).
About this color
#5B90CB is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.106 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.025 away. Black text reads best on it, at 6.29:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.29:1 |
| White text | 3.33:1 |
Values
| HEX | #5B90CB |
| RGB | rgb(91, 144, 203) |
| HSL | hsl(212, 52%, 58%) |
| OKLCH | oklch(64.1% 0.106 252.1) |
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 #5B90CB | 3.33:1 | AA large text | Lc -66.1 | Content text, not long reading |
| Black text on #5B90CB | 6.29:1 | AA | Lc 43.4 | Non-text elements, placeholder text |
| #5B90CB text on white | 3.33:1 | AA large text | Lc 60.6 | Content text, not long reading |
| #5B90CB text on black | 6.29:1 | AA | Lc -41.1 | 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
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CCDBEC
oklch(88.5% 0.029 251.5)
-
Step 300
300
#A9C3E2
oklch(80.8% 0.052 253)
-
Step 400
400
#7BA4D3
oklch(70.7% 0.082 252.3)
-
Step 500
500 (this color)
#5B90CB
oklch(64.1% 0.106 252.1)
-
Step 600
600
#3C76B4
oklch(55.6% 0.115 251.9)
-
Step 700
700
#2E639B
oklch(49.1% 0.106 251.9)
-
Step 800
800
#27517E
oklch(42.7% 0.089 252)
-
Step 900
900
#254365
oklch(37.6% 0.069 252.8)
-
Step 950
950
#16283B
oklch(27.1% 0.043 250.9)
#5B90CB 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) | #7893CE | 0.036 |
| Deuteranopia (no green cones) | #6988CA | 0.025 |
| Tritanopia (no blue cones) | #0A9EA5 | 0.093 |
| Achromatopsia (no color) | #8D8D8D | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B90CB
#5B90CB
oklch(64.1% 0.106 252.1)
- #B4813D
#B4813D
oklch(64.1% 0.105 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 #5B90CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.025
- Dark Sky Blue #448EE4 ΔE 0.044
- Cool Blue #4984B8 ΔE 0.047
- Dusty Blue #5A86AD ΔE 0.048
- Off Blue #5684AE ΔE 0.051
- Cornflower Blue #6495ED ΔE 0.053
- Chefchaouen Blue #4895EF ΔE 0.054
- Steel Blue #4682B4 ΔE 0.055
Use #5B90CB 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.