#5B8BCD
Closest named color: Faded Blue (#658CBB). oklch(63.1% 0.113 256.6), rgb(91, 139, 205).
Aa
Black text reads best on this color (6.01:1).
About this color
#5B8BCD is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.113 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.030 away. Black text reads best on it, at 6.01:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.01:1 |
| White text | 3.48:1 |
Values
| HEX | #5B8BCD |
| RGB | rgb(91, 139, 205) |
| HSL | hsl(215, 53%, 58%) |
| OKLCH | oklch(63.1% 0.113 256.6) |
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 #5B8BCD | 3.48:1 | AA large text | Lc -67.8 | Content text, not long reading |
| Black text on #5B8BCD | 6.01:1 | AA | Lc 41.8 | Non-text elements, placeholder text |
| #5B8BCD text on white | 3.48:1 | AA large text | Lc 62.3 | Content text, not long reading |
| #5B8BCD text on black | 6.01:1 | AA | Lc -39.4 | 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
#E3EBF5
oklch(93.7% 0.016 253.9)
-
Step 200
200
#CCDAEE
oklch(88.4% 0.031 257.2)
-
Step 300
300
#AAC3E5
oklch(81% 0.055 256.1)
-
Step 400
400
#7DA3D8
oklch(70.8% 0.089 256.8)
-
Step 500
500 (this color)
#5B8BCD
oklch(63.1% 0.113 256.6)
-
Step 600
600
#4074BA
oklch(55.7% 0.123 256.4)
-
Step 700
700
#3261A0
oklch(49.1% 0.114 256.4)
-
Step 800
800
#2A4F82
oklch(42.6% 0.095 256.9)
-
Step 900
900
#264268
oklch(37.6% 0.074 256.4)
-
Step 950
950
#17273D
oklch(27% 0.047 256.6)
#5B8BCD 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) | #708FD0 | 0.028 |
| Deuteranopia (no green cones) | #6284CC | 0.019 |
| Tritanopia (no blue cones) | #089AA3 | 0.100 |
| Achromatopsia (no color) | #898989 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B8BCD
#5B8BCD
oklch(63.1% 0.113 256.6)
- #B07F2E
#B07F2E
oklch(63.1% 0.113 76.2)
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 #5B8BCD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.030
- Dark Sky Blue #448EE4 ΔE 0.038
- Cool Blue #4984B8 ΔE 0.041
- Soft Blue #6488EA ΔE 0.048
- Dusty Blue #5A86AD ΔE 0.048
- Off Blue #5684AE ΔE 0.049
- Steel Blue #4682B4 ΔE 0.050
- Water Blue #0E87CC ΔE 0.053
Use #5B8BCD 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.