#0376E0
Closest named color: Cerulean Blue (#056EEE). oklch(57.2% 0.184 254.4), rgb(3, 118, 224).
Aa
Black text reads best on this color (4.67:1).
About this color
#0376E0 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.184 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.031 away. Black text reads best on it, at 4.67:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.184) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.67:1 |
| White text | 4.49:1 |
Values
| HEX | #0376E0 |
| RGB | rgb(3, 118, 224) |
| HSL | hsl(209, 97%, 45%) |
| OKLCH | oklch(57.2% 0.184 254.4) |
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 #0376E0 | 4.49:1 | AA large text | Lc -75.9 | Fine for body text |
| Black text on #0376E0 | 4.67:1 | AA | Lc 33.7 | Non-text elements, placeholder text |
| #0376E0 text on white | 4.49:1 | AA large text | Lc 70.4 | Content text, not long reading |
| #0376E0 text on black | 4.67:1 | 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
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C5DBF8
oklch(88.4% 0.047 255.4)
-
Step 300
300
#9CC4F6
oklch(80.9% 0.083 254.3)
-
Step 400
400
#64A3F1
oklch(70.7% 0.132 254.6)
-
Step 500
500
#348AEC
oklch(63.1% 0.168 254.4)
-
Step 600
600 (this color)
#0376E0
oklch(57.2% 0.184 254.4)
-
Step 700
700
#005FB7
oklch(49.1% 0.158 254.4)
-
Step 800
800
#004E98
oklch(42.8% 0.138 254.3)
-
Step 900
900
#0D417A
oklch(37.7% 0.11 254.6)
-
Step 950
950
#0A2747
oklch(27.1% 0.069 253.6)
#0376E0 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) | #3780E4 | 0.038 |
| Deuteranopia (no green cones) | #006EDE | 0.021 |
| Tritanopia (no blue cones) | #0090A0 | 0.137 |
| Achromatopsia (no color) | #777777 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0376E0
#0376E0
oklch(57.2% 0.184 254.4)
- #A16B00
#A16B00
oklch(57.1% 0.121 74.3)
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 #0376E0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.031
- Royal Blue #4169E1 ΔE 0.041
- Clear Blue #247AFD ΔE 0.047
- Windows Blue #3778BF ΔE 0.055
- Water Blue #0E87CC ΔE 0.060
- Bright Blue #0165FC ΔE 0.061
- Neon Blue #4361EE ΔE 0.061
- Azul #1D5DEC ΔE 0.064
Use #0376E0 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.