#5F91DC
Closest named color: Cornflower Blue (#6495ED). oklch(65.4% 0.125 258.3), rgb(95, 145, 220).
Aa
Black text reads best on this color (6.57:1).
About this color
#5F91DC is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.125 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.027 away. Black text reads best on it, at 6.57:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.57:1 |
| White text | 3.19:1 |
Values
| HEX | #5F91DC |
| RGB | rgb(95, 145, 220) |
| HSL | hsl(216, 64%, 62%) |
| OKLCH | oklch(65.4% 0.125 258.3) |
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 #5F91DC | 3.19:1 | AA large text | Lc -64.4 | Content text, not long reading |
| Black text on #5F91DC | 6.57:1 | AA | Lc 45.1 | Large or bold text, headings |
| #5F91DC text on white | 3.19:1 | AA large text | Lc 59.0 | Large or bold text, headings |
| #5F91DC text on black | 6.57:1 | AA | Lc -42.7 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAF0
oklch(88.5% 0.034 259.4)
-
Step 300
300
#A9C2E9
oklch(80.9% 0.062 259.2)
-
Step 400
400
#7AA2DD
oklch(70.6% 0.098 258)
-
Step 500
500 (this color)
#5F91DC
oklch(65.4% 0.125 258.3)
-
Step 600
600
#3D72C1
oklch(55.5% 0.136 258.3)
-
Step 700
700
#2F5FA7
oklch(49% 0.127 258.4)
-
Step 800
800
#284E87
oklch(42.6% 0.104 258.4)
-
Step 900
900
#25416C
oklch(37.6% 0.082 258.7)
-
Step 950
950
#16273F
oklch(27.1% 0.05 257.1)
#5F91DC 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) | #7296DF | 0.027 |
| Deuteranopia (no green cones) | #628BDA | 0.016 |
| Tritanopia (no blue cones) | #00A2AC | 0.111 |
| Achromatopsia (no color) | #909090 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F91DC
#5F91DC
oklch(65.4% 0.125 258.3)
- #BA8623
#BA8623
oklch(65.5% 0.125 78.3)
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 #5F91DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.027
- Dark Sky Blue #448EE4 ΔE 0.030
- Chefchaouen Blue #4895EF ΔE 0.032
- Soft Blue #6488EA ΔE 0.035
- Faded Blue #658CBB ΔE 0.049
- Perrywinkle #8F8CE7 ΔE 0.063
- Dodger Blue #1E90FF ΔE 0.067
- Cool Blue #4984B8 ΔE 0.067
Use #5F91DC 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.