#0773D4
Closest named color: Cerulean Blue (#056EEE). oklch(55.7% 0.171 253.5), rgb(7, 115, 212).
Aa
White text reads best on this color (4.75:1).
About this color
#0773D4 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.171 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.043 away. White text reads best on it, at 4.75:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.171) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.41:1 |
| White text | 4.75:1 |
Values
| HEX | #0773D4 |
| RGB | rgb(7, 115, 212) |
| HSL | hsl(208, 94%, 43%) |
| OKLCH | oklch(55.7% 0.171 253.5) |
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 #0773D4 | 4.75:1 | AA | Lc -77.8 | Fine for body text |
| Black text on #0773D4 | 4.41:1 | AA large text | Lc 31.8 | Non-text elements, placeholder text |
| #0773D4 text on white | 4.75:1 | AA | Lc 72.3 | Content text, not long reading |
| #0773D4 text on black | 4.41:1 | AA large text | Lc -29.4 | 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 600.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C6DBF6
oklch(88.4% 0.044 254.8)
-
Step 300
300
#9EC4F2
oklch(80.9% 0.077 253.5)
-
Step 400
400
#67A4EC
oklch(70.8% 0.124 253.5)
-
Step 500
500
#398BE6
oklch(63.1% 0.158 253.6)
-
Step 600
600 (this color)
#0773D4
oklch(55.7% 0.171 253.5)
-
Step 700
700
#0060B4
oklch(49.1% 0.153 253.4)
-
Step 800
800
#024E94
oklch(42.6% 0.132 253.6)
-
Step 900
900
#114276
oklch(37.7% 0.102 253.5)
-
Step 950
950
#0C2745
oklch(27% 0.065 253.3)
#0773D4 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) | #3C7CD8 | 0.040 |
| Deuteranopia (no green cones) | #006BD2 | 0.022 |
| Tritanopia (no blue cones) | #008B99 | 0.128 |
| Achromatopsia (no color) | #737373 | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0773D4
#0773D4
oklch(55.7% 0.171 253.5)
- #9C6700
#9C6700
oklch(55.7% 0.118 73.9)
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 #0773D4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.043
- Windows Blue #3778BF ΔE 0.043
- Royal Blue #4169E1 ΔE 0.044
- Mid Blue #276AB3 ΔE 0.053
- Water Blue #0E87CC ΔE 0.059
- Nice Blue #107AB0 ΔE 0.063
- French Blue #436BAD ΔE 0.066
- Clear Blue #247AFD ΔE 0.066
Use #0773D4 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.