#0B71ED
Closest named color: Cerulean Blue (#056EEE). oklch(57.1% 0.205 257.9), rgb(11, 113, 237).
Aa
Black text reads best on this color (4.59:1).
About this color
#0B71ED is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.205 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.008 away. Black text reads best on it, at 4.59:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.205) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.59:1 |
| White text | 4.56:1 |
Values
| HEX | #0B71ED |
| RGB | rgb(11, 113, 237) |
| HSL | hsl(213, 91%, 49%) |
| OKLCH | oklch(57.1% 0.205 257.9) |
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 #0B71ED | 4.56:1 | AA | Lc -76.4 | Fine for body text |
| Black text on #0B71ED | 4.59:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #0B71ED text on white | 4.56:1 | AA | Lc 70.9 | Content text, not long reading |
| #0B71ED text on black | 4.59:1 | AA | Lc -30.8 | 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 600.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFC
oklch(88.6% 0.051 258.4)
-
Step 300
300
#9CC3FC
oklch(81% 0.091 257.8)
-
Step 400
400
#63A1FB
oklch(70.7% 0.147 257.7)
-
Step 500
500
#3586F9
oklch(63.2% 0.189 258)
-
Step 600
600 (this color)
#0B71ED
oklch(57.1% 0.205 257.9)
-
Step 700
700
#005AC4
oklch(49% 0.181 258)
-
Step 800
800
#004AA3
oklch(42.8% 0.158 257.9)
-
Step 900
900
#0E3F81
oklch(37.7% 0.123 257.8)
-
Step 950
950
#0B254C
oklch(27% 0.079 258.6)
#0B71ED 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) | #0380F1 | 0.038 |
| Deuteranopia (no green cones) | #006DEB | 0.011 |
| Tritanopia (no blue cones) | #0090A4 | 0.155 |
| Achromatopsia (no color) | #767676 | 0.205 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B71ED
#0B71ED
oklch(57.1% 0.205 257.9)
- #9E6D00
#9E6D00
oklch(57.1% 0.119 77.6)
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 #0B71ED, closest first.
No curated palette has a color within ΔE 0.04 of #0B71ED.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.008
- Clear Blue #247AFD ΔE 0.035
- Royal Blue #4169E1 ΔE 0.036
- Bright Blue #0165FC ΔE 0.037
- Neon Blue #4361EE ΔE 0.044
- Azul #1D5DEC ΔE 0.047
- Warm Blue #4B57DB ΔE 0.071
- Electric Blue #0652FF ΔE 0.075
Use #0B71ED 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.