#376FF1
Closest named color: Cerulean Blue (#056EEE). oklch(58% 0.205 263.7), rgb(55, 111, 241).
Aa
Black text reads best on this color (4.70:1).
About this color
#376FF1 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.205 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.024 away. Black text reads best on it, at 4.70:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.205) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.70:1 |
| White text | 4.46:1 |
Values
| HEX | #376FF1 |
| RGB | rgb(55, 111, 241) |
| HSL | hsl(222, 87%, 58%) |
| OKLCH | oklch(58% 0.205 263.7) |
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 #376FF1 | 4.46:1 | AA large text | Lc -75.9 | Fine for body text |
| Black text on #376FF1 | 4.70:1 | AA | Lc 33.7 | Non-text elements, placeholder text |
| #376FF1 text on white | 4.46:1 | AA large text | Lc 70.4 | Content text, not long reading |
| #376FF1 text on black | 4.70:1 | AA | Lc -31.3 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C8DAFC
oklch(88.6% 0.051 263.2)
-
Step 300
300
#A2C1FD
oklch(81% 0.092 263.3)
-
Step 400
400
#709EFC
oklch(70.8% 0.147 263.4)
-
Step 500
500
#4C82FA
oklch(63.2% 0.188 263.7)
-
Step 600
600 (this color)
#376FF1
oklch(58% 0.205 263.7)
-
Step 700
700
#2455CA
oklch(49.1% 0.19 263.7)
-
Step 800
800
#1F46A4
oklch(42.7% 0.158 263.9)
-
Step 900
900
#1E3C82
oklch(37.7% 0.124 263.9)
-
Step 950
950
#12244C
oklch(27% 0.078 263.8)
#376FF1 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) | #0080F6 | 0.043 |
| Deuteranopia (no green cones) | #006FEE | 0.025 |
| Tritanopia (no blue cones) | #008FA5 | 0.160 |
| Achromatopsia (no color) | #777777 | 0.205 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #376FF1
#376FF1
oklch(58% 0.205 263.7)
- #9C7300
#9C7300
oklch(58.1% 0.119 83.6)
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 #376FF1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.024
- Royal Blue #4169E1 ΔE 0.027
- Clear Blue #247AFD ΔE 0.031
- Neon Blue #4361EE ΔE 0.032
- Bright Blue #0165FC ΔE 0.041
- Azul #1D5DEC ΔE 0.050
- Warm Blue #4B57DB ΔE 0.063
- Cornflower #6A79F7 ΔE 0.064
Use #376FF1 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.