#1E77DC
Closest named color: Cerulean Blue (#056EEE). oklch(57.4% 0.174 255.3), rgb(30, 119, 220).
Aa
Black text reads best on this color (4.72:1).
About this color
#1E77DC is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.174 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.039 away. Black text reads best on it, at 4.72:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.174) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.72:1 |
| White text | 4.44:1 |
Values
| HEX | #1E77DC |
| RGB | rgb(30, 119, 220) |
| HSL | hsl(212, 76%, 49%) |
| OKLCH | oklch(57.4% 0.174 255.3) |
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 #1E77DC | 4.44:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #1E77DC | 4.72:1 | AA | Lc 33.8 | Non-text elements, placeholder text |
| #1E77DC text on white | 4.44:1 | AA large text | Lc 70.2 | Content text, not long reading |
| #1E77DC text on black | 4.72:1 | AA | Lc -31.4 | 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
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C7DBF6
oklch(88.5% 0.043 255.9)
-
Step 300
300
#9FC3F3
oklch(80.8% 0.079 255.7)
-
Step 400
400
#69A3ED
oklch(70.7% 0.125 255.1)
-
Step 500
500
#3E8AE8
oklch(63.2% 0.16 255.4)
-
Step 600
600 (this color)
#1E77DC
oklch(57.4% 0.174 255.3)
-
Step 700
700
#035EB9
oklch(49% 0.162 255.4)
-
Step 800
800
#0B4D96
oklch(42.6% 0.135 255.5)
-
Step 900
900
#144177
oklch(37.6% 0.104 255.3)
-
Step 950
950
#0D2746
oklch(27.1% 0.066 254.6)
#1E77DC 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) | #3F80E0 | 0.035 |
| Deuteranopia (no green cones) | #0170DA | 0.022 |
| Tritanopia (no blue cones) | #008F9F | 0.129 |
| Achromatopsia (no color) | #787878 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1E77DC
#1E77DC
oklch(57.4% 0.174 255.3)
- #A16D00
#A16D00
oklch(57.5% 0.121 75.9)
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 #1E77DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.039
- Royal Blue #4169E1 ΔE 0.040
- Windows Blue #3778BF ΔE 0.047
- Clear Blue #247AFD ΔE 0.050
- Water Blue #0E87CC ΔE 0.054
- Neon Blue #4361EE ΔE 0.064
- Mid Blue #276AB3 ΔE 0.068
- Bright Blue #0165FC ΔE 0.069
Use #1E77DC 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.