#5B9FE2
Closest named color: Cornflower Blue (#6495ED). oklch(68.6% 0.121 249.7), rgb(91, 159, 226).
Aa
Black text reads best on this color (7.50:1).
About this color
#5B9FE2 is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.121 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.035 away. Black text reads best on it, at 7.50:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.50:1 |
| White text | 2.79:1 |
Values
| HEX | #5B9FE2 |
| RGB | rgb(91, 159, 226) |
| HSL | hsl(210, 70%, 62%) |
| OKLCH | oklch(68.6% 0.121 249.7) |
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 #5B9FE2 | 2.79:1 | Fails | Lc -58.9 | Large or bold text, headings |
| Black text on #5B9FE2 | 7.50:1 | AAA | Lc 50.4 | Large or bold text, headings |
| #5B9FE2 text on white | 2.79:1 | Fails | Lc 53.7 | Large or bold text, headings |
| #5B9FE2 text on black | 7.50:1 | AAA | Lc -48.2 | Large or bold text, headings |
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 400.
-
Step 50
50
#F0F6FC
oklch(97% 0.01 247.9)
-
Step 100
100
#DFEBF8
oklch(93.5% 0.022 250.2)
-
Step 200
200
#C5DCF5
oklch(88.5% 0.042 250.5)
-
Step 300
300
#9BC5F0
oklch(80.9% 0.076 249.4)
-
Step 400
400 (this color)
#5B9FE2
oklch(68.6% 0.121 249.7)
-
Step 500
500
#2D8DE2
oklch(63% 0.155 249.8)
-
Step 600
600
#0076CA
oklch(55.7% 0.156 249.7)
-
Step 700
700
#0063AB
oklch(49.2% 0.138 249.7)
-
Step 800
800
#00518D
oklch(42.7% 0.12 249.5)
-
Step 900
900
#064374
oklch(37.6% 0.101 249.7)
-
Step 950
950
#082844
oklch(27% 0.064 249)
#5B9FE2 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) | #82A2E5 | 0.044 |
| Deuteranopia (no green cones) | #7095E1 | 0.032 |
| Tritanopia (no blue cones) | #00AFB7 | 0.099 |
| Achromatopsia (no color) | #9A9A9A | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B9FE2
#5B9FE2
oklch(68.6% 0.121 249.7)
- #CA8B3C
#CA8B3C
oklch(68.5% 0.121 69.2)
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 #5B9FE2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.035
- Chefchaouen Blue #4895EF ΔE 0.041
- Dark Sky Blue #448EE4 ΔE 0.054
- Soft Blue #6488EA ΔE 0.065
- Faded Blue #658CBB ΔE 0.068
- Greyblue #77A1B5 ΔE 0.073
- Periwinkle Blue #8F99FB ΔE 0.074
- Perrywinkle #8F8CE7 ΔE 0.075
Use #5B9FE2 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.