#0F75DF
Closest named color: Cerulean Blue (#056EEE). oklch(57% 0.182 255.2), rgb(15, 117, 223).
Aa
Black text reads best on this color (4.63:1).
About this color
#0F75DF is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.182 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.030 away. Black text reads best on it, at 4.63:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.182) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.63:1 |
| White text | 4.53:1 |
Values
| HEX | #0F75DF |
| RGB | rgb(15, 117, 223) |
| HSL | hsl(211, 87%, 47%) |
| OKLCH | oklch(57% 0.182 255.2) |
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 #0F75DF | 4.53:1 | AA | Lc -76.3 | Fine for body text |
| Black text on #0F75DF | 4.63:1 | AA | Lc 33.3 | Non-text elements, placeholder text |
| #0F75DF text on white | 4.53:1 | AA | Lc 70.8 | Content text, not long reading |
| #0F75DF text on black | 4.63:1 | AA | Lc -30.9 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF8
oklch(88.5% 0.046 256.5)
-
Step 300
300
#9DC4F5
oklch(81% 0.081 254.4)
-
Step 400
400
#66A3F1
oklch(70.7% 0.131 255.2)
-
Step 500
500
#3889EC
oklch(63% 0.168 255.4)
-
Step 600
600 (this color)
#0F75DF
oklch(57% 0.182 255.2)
-
Step 700
700
#005EBA
oklch(49.1% 0.163 255.3)
-
Step 800
800
#024D99
oklch(42.7% 0.14 255.2)
-
Step 900
900
#10417A
oklch(37.7% 0.11 255.3)
-
Step 950
950
#0C2647
oklch(26.9% 0.069 255.8)
#0F75DF 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) | #367FE3 | 0.036 |
| Deuteranopia (no green cones) | #006EDD | 0.019 |
| Tritanopia (no blue cones) | #008F9F | 0.137 |
| Achromatopsia (no color) | #767676 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F75DF
#0F75DF
oklch(57% 0.182 255.2)
- #A06B00
#A06B00
oklch(57% 0.12 74.9)
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 #0F75DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.030
- Royal Blue #4169E1 ΔE 0.038
- Clear Blue #247AFD ΔE 0.048
- Windows Blue #3778BF ΔE 0.054
- Neon Blue #4361EE ΔE 0.059
- Bright Blue #0165FC ΔE 0.061
- Water Blue #0E87CC ΔE 0.061
- Azul #1D5DEC ΔE 0.062
Use #0F75DF 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.