#0B5BCF
Closest named color: Azul (#1D5DEC). oklch(50.2% 0.193 259.7), rgb(11, 91, 207).
Aa
White text reads best on this color (6.15:1).
About this color
#0B5BCF is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.193 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.046 away. White text reads best on it, at 6.15:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.193) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.41:1 |
| White text | 6.15:1 |
Values
| HEX | #0B5BCF |
| RGB | rgb(11, 91, 207) |
| HSL | hsl(216, 90%, 43%) |
| OKLCH | oklch(50.2% 0.193 259.7) |
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 #0B5BCF | 6.15:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #0B5BCF | 3.41:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #0B5BCF text on white | 6.15:1 | AA | Lc 79.9 | Fine for body text |
| #0B5BCF text on black | 3.41:1 | AA large text | Lc -21.9 | Dividers and decoration only |
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 700.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DAFC
oklch(88.4% 0.052 260)
-
Step 300
300
#9DC2FD
oklch(80.9% 0.093 259.6)
-
Step 400
400
#67A0FD
oklch(70.8% 0.149 259.7)
-
Step 500
500
#3B84FA
oklch(63% 0.191 259.7)
-
Step 600
600
#156AEA
oklch(55.6% 0.208 259.7)
-
Step 700
700 (this color)
#0B5BCF
oklch(50.2% 0.193 259.7)
-
Step 800
800
#0B48A4
oklch(42.6% 0.16 259.8)
-
Step 900
900
#133E82
oklch(37.7% 0.124 259.6)
-
Step 950
950
#0D254C
oklch(27% 0.078 259.7)
#0B5BCF 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) | #006AD3 | 0.038 |
| Deuteranopia (no green cones) | #0059CD | 0.007 |
| Tritanopia (no blue cones) | #00788C | 0.146 |
| Achromatopsia (no color) | #616161 | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B5BCF
#0B5BCF
oklch(50.2% 0.193 259.7)
- #835C00
#835C00
oklch(50.3% 0.104 79.8)
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 #0B5BCF, closest first.
No curated palette has a color within ΔE 0.04 of #0B5BCF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.046
- Warm Blue #4B57DB ΔE 0.053
- Blue Blue #2242C7 ΔE 0.057
- Royal Blue #4169E1 ΔE 0.062
- Mid Blue #276AB3 ΔE 0.065
- Cerulean Blue #056EEE ΔE 0.066
- Neon Blue #4361EE ΔE 0.066
- Bright Blue #0165FC ΔE 0.073
Use #0B5BCF 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.