#1C53AB
Closest named color: Dusk Blue (#26538D). oklch(45.9% 0.153 259.7), rgb(28, 83, 171).
Aa
White text reads best on this color (7.30:1).
About this color
#1C53AB is a medium-dark, vivid blue. In OKLCH its lightness is 46%, its chroma 0.153 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.049 away. White text reads best on it, at 7.30:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.87:1 |
| White text | 7.30:1 |
Values
| HEX | #1C53AB |
| RGB | rgb(28, 83, 171) |
| HSL | hsl(217, 72%, 39%) |
| OKLCH | oklch(45.9% 0.153 259.7) |
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 #1C53AB | 7.30:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #1C53AB | 2.87:1 | Fails | Lc 19.2 | Dividers and decoration only |
| #1C53AB text on white | 7.30:1 | AAA | Lc 84.8 | Fine for body text |
| #1C53AB text on black | 2.87:1 | Fails | Lc -17.2 | 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 700.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CADAF5
oklch(88.5% 0.041 260.9)
-
Step 300
300
#A5C2F1
oklch(80.9% 0.074 260)
-
Step 400
400
#74A1EA
oklch(70.7% 0.118 259.8)
-
Step 500
500
#4F88E3
oklch(63.1% 0.15 259.4)
-
Step 600
600
#336FD1
oklch(55.5% 0.164 259.8)
-
Step 700
700 (this color)
#1C53AB
oklch(45.9% 0.153 259.7)
-
Step 800
800
#214C93
oklch(42.7% 0.127 259.9)
-
Step 900
900
#204075
oklch(37.7% 0.098 259.9)
-
Step 950
950
#132644
oklch(27% 0.061 259.2)
#1C53AB 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) | #185DAE | 0.027 |
| Deuteranopia (no green cones) | #0050A9 | 0.016 |
| Tritanopia (no blue cones) | #006877 | 0.116 |
| Achromatopsia (no color) | #565656 | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C53AB
#1C53AB
oklch(45.9% 0.153 259.7)
- #745100
#745100
oklch(46.1% 0.096 79.8)
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 #1C53AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.049
- Cobalt #1E488F ΔE 0.052
- Denim Blue #3B5B92 ΔE 0.057
- Blue Blue #2242C7 ΔE 0.060
- Light Navy #155084 ΔE 0.064
- Light Navy Blue #2E5A88 ΔE 0.065
- Blueberry #464196 ΔE 0.065
- Sapphire #2138AB ΔE 0.066
Use #1C53AB 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.