#5F91C4
Closest named color: Faded Blue (#658CBB). oklch(64.2% 0.094 249.9), rgb(95, 145, 196).
Aa
Black text reads best on this color (6.33:1).
About this color
#5F91C4 is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.094 and its hue 250°. 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 6.33:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.33:1 |
| White text | 3.31:1 |
Values
| HEX | #5F91C4 |
| RGB | rgb(95, 145, 196) |
| HSL | hsl(210, 46%, 57%) |
| OKLCH | oklch(64.2% 0.094 249.9) |
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 #5F91C4 | 3.31:1 | AA large text | Lc -65.9 | Content text, not long reading |
| Black text on #5F91C4 | 6.33:1 | AA | Lc 43.6 | Non-text elements, placeholder text |
| #5F91C4 text on white | 3.31:1 | AA large text | Lc 60.4 | Content text, not long reading |
| #5F91C4 text on black | 6.33:1 | AA | Lc -41.3 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CDDBEA
oklch(88.5% 0.026 250)
-
Step 300
300
#ABC4DE
oklch(81% 0.046 249.4)
-
Step 400
400
#7EA5CD
oklch(70.8% 0.073 249.5)
-
Step 500
500 (this color)
#5F91C4
oklch(64.2% 0.094 249.9)
-
Step 600
600
#4177AD
oklch(55.7% 0.102 250.1)
-
Step 700
700
#326494
oklch(49.1% 0.094 249.5)
-
Step 800
800
#2A5278
oklch(42.8% 0.078 249)
-
Step 900
900
#274461
oklch(37.8% 0.061 249.7)
-
Step 950
950
#172839
oklch(27.1% 0.039 249.5)
#5F91C4 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) | #7C93C6 | 0.035 |
| Deuteranopia (no green cones) | #6F89C3 | 0.027 |
| Tritanopia (no blue cones) | #2A9DA3 | 0.081 |
| Achromatopsia (no color) | #8D8D8D | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F91C4
#5F91C4
oklch(64.2% 0.094 249.9)
- #B2824A
#B2824A
oklch(64.2% 0.094 69.1)
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 #5F91C4, 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 0.042
- Silver Lake Blue #778DA9 ΔE 0.045
- Off Blue #5684AE ΔE 0.047
- Cool Blue #4984B8 ΔE 0.047
- Blue Grey #758DA3 ΔE 0.052
- Steel Blue #4682B4 ΔE 0.055
- Dark Sky Blue #448EE4 ΔE 0.056
Use #5F91C4 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.