#5D91E2
Closest named color: Cornflower Blue (#6495ED). oklch(65.7% 0.134 259), rgb(93, 145, 226).
Aa
Black text reads best on this color (6.61:1).
About this color
#5D91E2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 66%, its chroma 0.134 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.020 away. Black text reads best on it, at 6.61:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.61:1 |
| White text | 3.17:1 |
Values
| HEX | #5D91E2 |
| RGB | rgb(93, 145, 226) |
| HSL | hsl(217, 70%, 63%) |
| OKLCH | oklch(65.7% 0.134 259) |
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 #5D91E2 | 3.17:1 | AA large text | Lc -64.1 | Content text, not long reading |
| Black text on #5D91E2 | 6.61:1 | AA | Lc 45.4 | Large or bold text, headings |
| #5D91E2 text on white | 3.17:1 | AA large text | Lc 58.7 | Large or bold text, headings |
| #5D91E2 text on black | 6.61:1 | AA | Lc -43.0 | 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
#E2EAF7
oklch(93.5% 0.02 260.2)
-
Step 200
200
#CBDAF2
oklch(88.5% 0.037 259.8)
-
Step 300
300
#A8C2EB
oklch(80.9% 0.065 259.4)
-
Step 400
400
#78A2E2
oklch(70.7% 0.105 258.6)
-
Step 500
500 (this color)
#5D91E2
oklch(65.7% 0.134 259)
-
Step 600
600
#3A71C7
oklch(55.5% 0.146 259.1)
-
Step 700
700
#2C5EAC
oklch(49% 0.136 259.1)
-
Step 800
800
#264D8B
oklch(42.6% 0.112 259.3)
-
Step 900
900
#23416F
oklch(37.7% 0.087 258.7)
-
Step 950
950
#152641
oklch(26.9% 0.056 259.3)
#5D91E2 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) | #6F97E5 | 0.027 |
| Deuteranopia (no green cones) | #5D8BE0 | 0.016 |
| Tritanopia (no blue cones) | #00A3AF | 0.115 |
| Achromatopsia (no color) | #909090 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5D91E2
#5D91E2
oklch(65.7% 0.134 259)
- #BC860D
#BC860D
oklch(65.7% 0.134 79.4)
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 #5D91E2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.020
- Chefchaouen Blue #4895EF ΔE 0.025
- Dark Sky Blue #448EE4 ΔE 0.025
- Soft Blue #6488EA ΔE 0.029
- Faded Blue #658CBB ΔE 0.058
- Dodger Blue #1E90FF ΔE 0.059
- Perrywinkle #8F8CE7 ΔE 0.062
- Water Blue #0E87CC ΔE 0.070
Use #5D91E2 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.