#5B9ADC
Closest named color: Cornflower Blue (#6495ED). oklch(67.2% 0.118 251), rgb(91, 154, 220).
Aa
Black text reads best on this color (7.10:1).
About this color
#5B9ADC is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.118 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.033 away. Black text reads best on it, at 7.10:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 7.10:1 |
| White text | 2.95:1 |
Values
| HEX | #5B9ADC |
| RGB | rgb(91, 154, 220) |
| HSL | hsl(211, 65%, 61%) |
| OKLCH | oklch(67.2% 0.118 251) |
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 #5B9ADC | 2.95:1 | Fails | Lc -61.3 | Content text, not long reading |
| Black text on #5B9ADC | 7.10:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #5B9ADC text on white | 2.95:1 | Fails | Lc 55.9 | Large or bold text, headings |
| #5B9ADC text on black | 7.10:1 | AAA | Lc -45.9 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C6DCF4
oklch(88.6% 0.041 250.6)
-
Step 300
300
#9DC5EF
oklch(80.9% 0.073 250)
-
Step 400
400 (this color)
#5B9ADC
oklch(67.2% 0.118 251)
-
Step 500
500
#368DE1
oklch(63.2% 0.151 250.9)
-
Step 600
600
#0075CD
oklch(55.6% 0.161 250.9)
-
Step 700
700
#0062AE
oklch(49.1% 0.143 251.1)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#0E4373
oklch(37.7% 0.098 250.8)
-
Step 950
950
#0B2844
oklch(27.2% 0.062 250.6)
#5B9ADC 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) | #7E9DDF | 0.040 |
| Deuteranopia (no green cones) | #6D90DB | 0.030 |
| Tritanopia (no blue cones) | #00A9B1 | 0.099 |
| Achromatopsia (no color) | #969696 | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B9ADC
#5B9ADC
oklch(67.2% 0.118 251)
- #C38839
#C38839
oklch(67.1% 0.118 71)
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 #5B9ADC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.033
- Chefchaouen Blue #4895EF ΔE 0.038
- Dark Sky Blue #448EE4 ΔE 0.045
- Faded Blue #658CBB ΔE 0.055
- Soft Blue #6488EA ΔE 0.057
- Greyblue #77A1B5 ΔE 0.072
- Perrywinkle #8F8CE7 ΔE 0.073
- Dodger Blue #1E90FF ΔE 0.075
Use #5B9ADC 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.