#0F63B0
Closest named color: Mid Blue (#276AB3). oklch(49.7% 0.143 252.4), rgb(15, 99, 176).
Aa
White text reads best on this color (6.11:1).
About this color
#0F63B0 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.143 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.025 away. White text reads best on it, at 6.11:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.43:1 |
| White text | 6.11:1 |
Values
| HEX | #0F63B0 |
| RGB | rgb(15, 99, 176) |
| HSL | hsl(209, 84%, 37%) |
| OKLCH | oklch(49.7% 0.143 252.4) |
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 #0F63B0 | 6.11:1 | AA | Lc -85.2 | Fine for body text |
| Black text on #0F63B0 | 3.43:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #0F63B0 text on white | 6.11:1 | AA | Lc 80.0 | Fine for body text |
| #0F63B0 text on black | 3.43:1 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C8DBF2
oklch(88.4% 0.038 253.2)
-
Step 300
300
#A1C4ED
oklch(80.9% 0.069 252.7)
-
Step 400
400
#6CA4E4
oklch(70.6% 0.111 252.6)
-
Step 500
500
#428CDC
oklch(63.1% 0.142 252.5)
-
Step 600
600
#1C74C9
oklch(55.5% 0.154 252.4)
-
Step 700
700 (this color)
#0F63B0
oklch(49.7% 0.143 252.4)
-
Step 800
800
#10508D
oklch(42.8% 0.118 252.2)
-
Step 900
900
#174371
oklch(37.8% 0.092 252.4)
-
Step 950
950
#0F2742
oklch(26.9% 0.059 253.1)
#0F63B0 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) | #3B69B3 | 0.037 |
| Deuteranopia (no green cones) | #1A5CAE | 0.019 |
| Tritanopia (no blue cones) | #007681 | 0.105 |
| Achromatopsia (no color) | #626262 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F63B0
#0F63B0
oklch(49.7% 0.143 252.4)
- #875700
#875700
oklch(49.8% 0.106 72.4)
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 #0F63B0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.025
- French Blue #436BAD ΔE 0.047
- Peacock Blue #016795 ΔE 0.048
- Denim Blue #3B5B92 ΔE 0.054
- Ocean Blue #03719C ΔE 0.057
- Dusky Blue #475F94 ΔE 0.058
- Flat Blue #3C73A8 ΔE 0.062
- Muted Blue #3B719F ΔE 0.063
Use #0F63B0 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.