#5F91BC
Closest named color: Faded Blue (#658CBB). oklch(63.9% 0.084 245.6), rgb(95, 145, 188).
Aa
Black text reads best on this color (6.26:1).
About this color
#5F91BC is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.084 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.014 away. Black text reads best on it, at 6.26:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.26:1 |
| White text | 3.35:1 |
Values
| HEX | #5F91BC |
| RGB | rgb(95, 145, 188) |
| HSL | hsl(208, 41%, 55%) |
| OKLCH | oklch(63.9% 0.084 245.6) |
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 #5F91BC | 3.35:1 | AA large text | Lc -66.3 | Content text, not long reading |
| Black text on #5F91BC | 6.26:1 | AA | Lc 43.2 | Non-text elements, placeholder text |
| #5F91BC text on white | 3.35:1 | AA large text | Lc 60.9 | Content text, not long reading |
| #5F91BC text on black | 6.26:1 | AA | Lc -40.8 | 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
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CDDBE8
oklch(88.5% 0.023 246.1)
-
Step 300
300
#ABC4DA
oklch(80.9% 0.041 244.9)
-
Step 400
400
#7EA5C8
oklch(70.6% 0.067 246)
-
Step 500
500 (this color)
#5F91BC
oklch(63.9% 0.084 245.6)
-
Step 600
600
#4278A6
oklch(55.6% 0.092 246.2)
-
Step 700
700
#33658E
oklch(49.1% 0.085 245.5)
-
Step 800
800
#2B5373
oklch(42.8% 0.07 244.6)
-
Step 900
900
#27445D
oklch(37.6% 0.056 246)
-
Step 950
950
#182836
oklch(27% 0.034 245.9)
#5F91BC 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) | #7F92BE | 0.039 |
| Deuteranopia (no green cones) | #7388BB | 0.032 |
| Tritanopia (no blue cones) | #329BA0 | 0.070 |
| Achromatopsia (no color) | #8C8C8C | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F91BC
#5F91BC
oklch(63.9% 0.084 245.6)
- #AF8153
#AF8153
oklch(63.8% 0.084 65.3)
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 #5F91BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.014
- Dusty Blue #5A86AD ΔE 0.035
- Silver Lake Blue #778DA9 ΔE 0.037
- Off Blue #5684AE ΔE 0.041
- Blue Grey #758DA3 ΔE 0.042
- Cool Blue #4984B8 ΔE 0.046
- Steel Blue #4682B4 ΔE 0.053
- Light Slate Gray #778899 ΔE 0.055
Use #5F91BC 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.