#0F55CB
Closest named color: Blue Blue (#2242C7). oklch(48.7% 0.195 260.9), rgb(15, 85, 203).
Aa
White text reads best on this color (6.59:1).
About this color
#0F55CB is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.195 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.042 away. White text reads best on it, at 6.59:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.195) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.18:1 |
| White text | 6.59:1 |
Values
| HEX | #0F55CB |
| RGB | rgb(15, 85, 203) |
| HSL | hsl(218, 86%, 43%) |
| OKLCH | oklch(48.7% 0.195 260.9) |
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 #0F55CB | 6.59:1 | AA | Lc -86.9 | Fine for body text |
| Black text on #0F55CB | 3.18:1 | AA large text | Lc 22.2 | Dividers and decoration only |
| #0F55CB text on white | 6.59:1 | AA | Lc 81.8 | Fine for body text |
| #0F55CB text on black | 3.18:1 | AA large text | Lc -20.1 | 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
#E0EBFD
oklch(93.7% 0.027 260.3)
-
Step 200
200
#C6DAFD
oklch(88.5% 0.053 261.7)
-
Step 300
300
#9EC2FE
oklch(81% 0.094 260.4)
-
Step 400
400
#699FFE
oklch(70.7% 0.151 261)
-
Step 500
500
#4083FC
oklch(63.1% 0.193 261.1)
-
Step 600
600
#1E69EB
oklch(55.6% 0.209 260.9)
-
Step 700
700 (this color)
#0F55CB
oklch(48.7% 0.195 260.9)
-
Step 800
800
#1247A5
oklch(42.6% 0.161 261.1)
-
Step 900
900
#163D83
oklch(37.7% 0.126 261)
-
Step 950
950
#0E244D
oklch(26.9% 0.081 261.5)
#0F55CB 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) | #0065CF | 0.040 |
| Deuteranopia (no green cones) | #0055C9 | 0.006 |
| Tritanopia (no blue cones) | #007388 | 0.147 |
| Achromatopsia (no color) | #5D5D5D | 0.195 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F55CB
#0F55CB
oklch(48.7% 0.195 260.9)
- #7C5800
#7C5800
oklch(48.6% 0.1 81)
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 #0F55CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.042
- Azul #1D5DEC ΔE 0.056
- Warm Blue #4B57DB ΔE 0.059
- Majorelle Blue #3F37C9 ΔE 0.067
- Mid Blue #276AB3 ΔE 0.073
- Royal Blue #4169E1 ΔE 0.075
- Neon Blue #4361EE ΔE 0.077
- Blue With A Hint Of Purple #533CC6 ΔE 0.078
Use #0F55CB 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.