#1C76D9
Closest named color: Cerulean Blue (#056EEE). oklch(57% 0.172 254.9), rgb(28, 118, 217).
Aa
Black text reads best on this color (4.64:1).
About this color
#1C76D9 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.172 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.040 away. Black text reads best on it, at 4.64:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.64:1 |
| White text | 4.52:1 |
Values
| HEX | #1C76D9 |
| RGB | rgb(28, 118, 217) |
| HSL | hsl(211, 77%, 48%) |
| OKLCH | oklch(57% 0.172 254.9) |
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 #1C76D9 | 4.52:1 | AA | Lc -76.3 | Fine for body text |
| Black text on #1C76D9 | 4.64:1 | AA | Lc 33.3 | Non-text elements, placeholder text |
| #1C76D9 text on white | 4.52:1 | AA | Lc 70.8 | Content text, not long reading |
| #1C76D9 text on black | 4.64:1 | AA | Lc -30.8 | 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
#9FC4F2
oklch(81% 0.077 254.1)
-
Step 400
400
#69A3EC
oklch(70.6% 0.124 254.8)
-
Step 500
500
#3E8AE6
oklch(63.1% 0.158 255)
-
Step 600
600 (this color)
#1C76D9
oklch(57% 0.172 254.9)
-
Step 700
700
#035FB8
oklch(49.2% 0.159 254.8)
-
Step 800
800
#0B4E95
oklch(42.8% 0.132 254.9)
-
Step 900
900
#144177
oklch(37.6% 0.104 255.3)
-
Step 950
950
#0D2745
oklch(27% 0.064 254)
#1C76D9 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) | #3F7FDD | 0.036 |
| Deuteranopia (no green cones) | #076FD7 | 0.021 |
| Tritanopia (no blue cones) | #008E9D | 0.129 |
| Achromatopsia (no color) | #767676 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C76D9
#1C76D9
oklch(57% 0.172 254.9)
- #A06B00
#A06B00
oklch(57% 0.12 74.9)
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 #1C76D9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.040
- Royal Blue #4169E1 ΔE 0.041
- Windows Blue #3778BF ΔE 0.044
- Water Blue #0E87CC ΔE 0.054
- Clear Blue #247AFD ΔE 0.055
- Mid Blue #276AB3 ΔE 0.063
- Neon Blue #4361EE ΔE 0.065
- Nice Blue #107AB0 ΔE 0.068
Use #1C76D9 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.