#0A79CD
Closest named color: Windows Blue (#3778BF). oklch(56.6% 0.156 249.7), rgb(10, 121, 205).
Aa
Black text reads best on this color (4.62:1).
About this color
#0A79CD is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.156 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.028 away. Black text reads best on it, at 4.62:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.62:1 |
| White text | 4.53:1 |
Values
| HEX | #0A79CD |
| RGB | rgb(10, 121, 205) |
| HSL | hsl(206, 91%, 42%) |
| OKLCH | oklch(56.6% 0.156 249.7) |
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 #0A79CD | 4.53:1 | AA | Lc -76.3 | Fine for body text |
| Black text on #0A79CD | 4.62:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #0A79CD text on white | 4.53:1 | AA | Lc 70.9 | Content text, not long reading |
| #0A79CD text on black | 4.62:1 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C6DCF3
oklch(88.5% 0.04 249.5)
-
Step 300
300
#9EC5ED
oklch(80.9% 0.071 249.4)
-
Step 400
400
#67A5E4
oklch(70.6% 0.113 250.1)
-
Step 500
500
#398EDC
oklch(63.2% 0.143 249.6)
-
Step 600
600 (this color)
#0A79CD
oklch(56.6% 0.156 249.7)
-
Step 700
700
#0063AB
oklch(49.2% 0.138 249.7)
-
Step 800
800
#00518D
oklch(42.7% 0.12 249.5)
-
Step 900
900
#104471
oklch(37.8% 0.093 249.5)
-
Step 950
950
#0C2842
oklch(27.1% 0.059 249.5)
#0A79CD 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) | #4E7FD0 | 0.047 |
| Deuteranopia (no green cones) | #2D6FCB | 0.028 |
| Tritanopia (no blue cones) | #008D99 | 0.112 |
| Achromatopsia (no color) | #767676 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A79CD
#0A79CD
oklch(56.6% 0.156 249.7)
- #A46700
#A46700
oklch(56.7% 0.123 69.5)
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 #0A79CD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.028
- Water Blue #0E87CC ΔE 0.040
- Nice Blue #107AB0 ΔE 0.046
- Mid Blue #276AB3 ΔE 0.052
- Flat Blue #3C73A8 ΔE 0.059
- Royal Blue #4169E1 ΔE 0.060
- French Blue #436BAD ΔE 0.060
- Cerulean Blue #056EEE ΔE 0.061
Use #0A79CD 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.