#2376D9
Closest named color: Royal Blue (#4169E1). oklch(57.1% 0.17 255.8), rgb(35, 118, 217).
Aa
Black text reads best on this color (4.66:1).
About this color
#2376D9 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.170 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.039 away. Black text reads best on it, at 4.66:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.66:1 |
| White text | 4.50:1 |
Values
| HEX | #2376D9 |
| RGB | rgb(35, 118, 217) |
| HSL | hsl(213, 72%, 49%) |
| OKLCH | oklch(57.1% 0.17 255.8) |
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 #2376D9 | 4.50:1 | AA | Lc -76.2 | Fine for body text |
| Black text on #2376D9 | 4.66:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #2376D9 text on white | 4.50:1 | AA | Lc 70.7 | Content text, not long reading |
| #2376D9 text on black | 4.66:1 | AA | Lc -31.0 | 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C7DBF6
oklch(88.5% 0.043 255.9)
-
Step 300
300
#A0C3F2
oklch(80.8% 0.077 255.9)
-
Step 400
400
#6BA3EC
oklch(70.7% 0.123 255.5)
-
Step 500
500
#418AE6
oklch(63.2% 0.157 255.6)
-
Step 600
600 (this color)
#2376D9
oklch(57.1% 0.17 255.8)
-
Step 700
700
#0D5EB8
oklch(49.1% 0.159 255.9)
-
Step 800
800
#114D95
oklch(42.6% 0.132 256.2)
-
Step 900
900
#174176
oklch(37.7% 0.102 256)
-
Step 950
950
#0F2745
oklch(27.1% 0.064 255.3)
#2376D9 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) | #407FDD | 0.034 |
| Deuteranopia (no green cones) | #0D6FD7 | 0.022 |
| Tritanopia (no blue cones) | #008E9D | 0.129 |
| Achromatopsia (no color) | #777777 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2376D9
#2376D9
oklch(57.1% 0.17 255.8)
- #A06C00
#A06C00
oklch(57.2% 0.12 75.7)
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 #2376D9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.039
- Cerulean Blue #056EEE ΔE 0.041
- Windows Blue #3778BF ΔE 0.043
- Water Blue #0E87CC ΔE 0.053
- Clear Blue #247AFD ΔE 0.055
- Mid Blue #276AB3 ΔE 0.063
- Neon Blue #4361EE ΔE 0.064
- Nice Blue #107AB0 ΔE 0.068
Use #2376D9 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.