#2276DD
Closest named color: Cerulean Blue (#056EEE). oklch(57.4% 0.176 256.3), rgb(34, 118, 221).
Aa
Black text reads best on this color (4.70:1).
About this color
#2276DD is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.176 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.036 away. Black text reads best on it, at 4.70:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.70:1 |
| White text | 4.46:1 |
Values
| HEX | #2276DD |
| RGB | rgb(34, 118, 221) |
| HSL | hsl(213, 73%, 50%) |
| OKLCH | oklch(57.4% 0.176 256.3) |
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 #2276DD | 4.46:1 | AA large text | Lc -75.9 | Fine for body text |
| Black text on #2276DD | 4.70:1 | AA | Lc 33.7 | Non-text elements, placeholder text |
| #2276DD text on white | 4.46:1 | AA large text | Lc 70.4 | Content text, not long reading |
| #2276DD text on black | 4.70:1 | AA | Lc -31.2 | 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
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C7DBF7
oklch(88.5% 0.044 256.8)
-
Step 300
300
#A0C3F4
oklch(80.9% 0.079 256.8)
-
Step 400
400
#6AA2EE
oklch(70.6% 0.127 256.4)
-
Step 500
500
#4089E9
oklch(63.1% 0.162 256.4)
-
Step 600
600 (this color)
#2276DD
oklch(57.4% 0.176 256.3)
-
Step 700
700
#0A5DBA
oklch(49% 0.163 256.4)
-
Step 800
800
#0F4D97
oklch(42.7% 0.135 256.3)
-
Step 900
900
#164178
oklch(37.8% 0.105 256.3)
-
Step 950
950
#0E2646
oklch(26.9% 0.067 256.5)
#2276DD 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) | #3C80E1 | 0.034 |
| Deuteranopia (no green cones) | #0070DB | 0.021 |
| Tritanopia (no blue cones) | #008F9F | 0.133 |
| Achromatopsia (no color) | #777777 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2276DD
#2276DD
oklch(57.4% 0.176 256.3)
- #A06D00
#A06D00
oklch(57.4% 0.12 76.5)
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 #2276DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.036
- Royal Blue #4169E1 ΔE 0.037
- Windows Blue #3778BF ΔE 0.049
- Clear Blue #247AFD ΔE 0.049
- Water Blue #0E87CC ΔE 0.057
- Neon Blue #4361EE ΔE 0.060
- Bright Blue #0165FC ΔE 0.066
- Azul #1D5DEC ΔE 0.067
Use #2276DD 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.