#376AEC
Closest named color: Royal Blue (#4169E1). oklch(56.6% 0.204 264.5), rgb(55, 106, 236).
Aa
White text reads best on this color (4.73:1).
About this color
#376AEC is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.204 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.018 away. White text reads best on it, at 4.73:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.204) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.43:1 |
| White text | 4.73:1 |
Values
| HEX | #376AEC |
| RGB | rgb(55, 106, 236) |
| HSL | hsl(223, 83%, 57%) |
| OKLCH | oklch(56.6% 0.204 264.5) |
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 #376AEC | 4.73:1 | AA | Lc -77.8 | Fine for body text |
| Black text on #376AEC | 4.43:1 | AA large text | Lc 31.8 | Non-text elements, placeholder text |
| #376AEC text on white | 4.73:1 | AA | Lc 72.3 | Content text, not long reading |
| #376AEC text on black | 4.43:1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C8D9FC
oklch(88.4% 0.052 264.8)
-
Step 300
300
#A3C0FD
oklch(80.9% 0.092 264.7)
-
Step 400
400
#729DFC
oklch(70.7% 0.147 264.5)
-
Step 500
500
#4F81F9
oklch(63.1% 0.187 264.6)
-
Step 600
600 (this color)
#376AEC
oklch(56.6% 0.204 264.5)
-
Step 700
700
#2854CA
oklch(49% 0.19 264.6)
-
Step 800
800
#2146A3
oklch(42.7% 0.157 264.3)
-
Step 900
900
#203C82
oklch(37.8% 0.123 264.7)
-
Step 950
950
#13244C
oklch(27.1% 0.077 264.5)
#376AEC 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) | #007CF0 | 0.045 |
| Deuteranopia (no green cones) | #006BE9 | 0.025 |
| Tritanopia (no blue cones) | #008AA1 | 0.159 |
| Achromatopsia (no color) | #737373 | 0.204 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #376AEC
#376AEC
oklch(56.6% 0.204 264.5)
- #966F00
#966F00
oklch(56.6% 0.116 84.1)
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 #376AEC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.018
- Neon Blue #4361EE ΔE 0.022
- Cerulean Blue #056EEE ΔE 0.023
- Bright Blue #0165FC ΔE 0.038
- Azul #1D5DEC ΔE 0.039
- Clear Blue #247AFD ΔE 0.044
- Warm Blue #4B57DB ΔE 0.051
- Dark Periwinkle #665FD1 ΔE 0.068
Use #376AEC 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.