#5B7AEF
Closest named color: Cornflower (#6A79F7). oklch(61.6% 0.179 269.4), rgb(91, 122, 239).
Aa
Black text reads best on this color (5.47:1).
About this color
#5B7AEF is a medium-dark, vivid blue. In OKLCH its lightness is 62%, its chroma 0.179 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.022 away. Black text reads best on it, at 5.47:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.179) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.47:1 |
| White text | 3.83:1 |
Values
| HEX | #5B7AEF |
| RGB | rgb(91, 122, 239) |
| HSL | hsl(227, 82%, 65%) |
| OKLCH | oklch(61.6% 0.179 269.4) |
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 #5B7AEF | 3.83:1 | AA large text | Lc -71.0 | Content text, not long reading |
| Black text on #5B7AEF | 5.47:1 | AA | Lc 38.5 | Non-text elements, placeholder text |
| #5B7AEF text on white | 3.83:1 | AA large text | Lc 65.5 | Content text, not long reading |
| #5B7AEF text on black | 5.47:1 | AA | Lc -36.1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFB
oklch(93.7% 0.024 267.9)
-
Step 200
200
#CCD8FA
oklch(88.4% 0.049 270)
-
Step 300
300
#AABFFA
oklch(81% 0.087 269.2)
-
Step 400
400
#7E9BF8
oklch(70.8% 0.14 269.5)
-
Step 500
500 (this color)
#5B7AEF
oklch(61.6% 0.179 269.4)
-
Step 600
600
#4865E3
oklch(55.7% 0.194 269.3)
-
Step 700
700
#3A52C5
oklch(49% 0.181 269.5)
-
Step 800
800
#30449F
oklch(42.6% 0.149 269.6)
-
Step 900
900
#293B7F
oklch(37.8% 0.117 269)
-
Step 950
950
#18234A
oklch(27% 0.074 269.2)
#5B7AEF 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) | #3B89F3 | 0.043 |
| Deuteranopia (no green cones) | #187CED | 0.049 |
| Tritanopia (no blue cones) | #0095A9 | 0.152 |
| Achromatopsia (no color) | #828282 | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B7AEF
#5B7AEF
oklch(61.6% 0.179 269.4)
- #A38000
#A38000
oklch(61.6% 0.126 89.4)
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 #5B7AEF, closest first.
No curated palette has a color within ΔE 0.04 of #5B7AEF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.022
- Soft Blue #6488EA ΔE 0.041
- Clear Blue #247AFD ΔE 0.048
- Medium Slate Blue #7B68EE ΔE 0.056
- Royal Blue #4169E1 ΔE 0.058
- Dark Sky Blue #448EE4 ΔE 0.058
- Dodger Blue #1E90FF ΔE 0.064
- Chefchaouen Blue #4895EF ΔE 0.069
Use #5B7AEF 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.