#1C4CAA
Closest named color: Cobalt (#1E488F). oklch(44.4% 0.16 261.9), rgb(28, 76, 170).
Aa
White text reads best on this color (7.88:1).
About this color
#1C4CAA is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.160 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.045 away. White text reads best on it, at 7.88:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.66:1 |
| White text | 7.88:1 |
Values
| HEX | #1C4CAA |
| RGB | rgb(28, 76, 170) |
| HSL | hsl(220, 72%, 39%) |
| OKLCH | oklch(44.4% 0.16 261.9) |
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 #1C4CAA | 7.88:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #1C4CAA | 2.66:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #1C4CAA text on white | 7.88:1 | AAA | Lc 86.8 | Fine for body text |
| #1C4CAA text on black | 2.66:1 | Fails | Lc -15.3 | 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 800.
-
Step 50
50
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EAFD
oklch(93.5% 0.028 263.4)
-
Step 200
200
#C7DAFC
oklch(88.5% 0.051 262.1)
-
Step 300
300
#A0C1FE
oklch(80.9% 0.094 262.4)
-
Step 400
400
#6C9EFD
oklch(70.6% 0.15 262.2)
-
Step 500
500
#4483FB
oklch(63.2% 0.191 261.8)
-
Step 600
600
#2668EA
oklch(55.5% 0.208 262)
-
Step 700
700
#1956CC
oklch(49.2% 0.193 261.9)
-
Step 800
800 (this color)
#1C4CAA
oklch(44.4% 0.16 261.9)
-
Step 900
900
#193D82
oklch(37.7% 0.124 261.8)
-
Step 950
950
#0F244C
oklch(26.9% 0.079 261.8)
#1C4CAA 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) | #0058AD | 0.031 |
| Deuteranopia (no green cones) | #004BA8 | 0.014 |
| Tritanopia (no blue cones) | #006373 | 0.123 |
| Achromatopsia (no color) | #515151 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C4CAA
#1C4CAA
oklch(44.4% 0.16 261.9)
- #6C4D00
#6C4D00
oklch(44.2% 0.091 81.9)
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 #1C4CAA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.045
- Sapphire #2138AB ΔE 0.047
- Blue Blue #2242C7 ΔE 0.051
- Dusk Blue #26538D ΔE 0.054
- Blueberry #464196 ΔE 0.058
- Light Navy #155084 ΔE 0.065
- Denim Blue #3B5B92 ΔE 0.069
- Majorelle Blue #3F37C9 ΔE 0.072
Use #1C4CAA 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.