#1C4AAF
Closest named color: Blue Blue (#2242C7). oklch(44.4% 0.169 262.9), rgb(28, 74, 175).
Aa
White text reads best on this color (7.93:1).
About this color
#1C4AAF is a dark, vivid blue. In OKLCH its lightness is 44%, its chroma 0.169 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.042 away. White text reads best on it, at 7.93:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | vivid (0.169) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 2.64:1 |
| White text | 7.93:1 |
Values
| HEX | #1C4AAF |
| RGB | rgb(28, 74, 175) |
| HSL | hsl(221, 72%, 40%) |
| OKLCH | oklch(44.4% 0.169 262.9) |
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 #1C4AAF | 7.93:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #1C4AAF | 2.64:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #1C4AAF text on white | 7.93:1 | AAA | Lc 86.9 | Fine for body text |
| #1C4AAF text on black | 2.64:1 | Fails | Lc -15.2 | 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 800.
-
Step 50
50
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFE
oklch(93.6% 0.029 264.4)
-
Step 200
200
#C6DAFE
oklch(88.5% 0.054 262.2)
-
Step 300
300
#A0C1FF
oklch(80.9% 0.095 262.7)
-
Step 400
400
#6D9EFF
oklch(70.8% 0.152 262.8)
-
Step 500
500
#4581FF
oklch(63.1% 0.198 262.9)
-
Step 600
600
#2665F1
oklch(55.5% 0.22 263)
-
Step 700
700
#1A53D2
oklch(49.1% 0.204 262.9)
-
Step 800
800 (this color)
#1C4AAF
oklch(44.4% 0.169 262.9)
-
Step 900
900
#193C86
oklch(37.8% 0.131 262.8)
-
Step 950
950
#0F244F
oklch(27.1% 0.084 262.6)
#1C4AAF 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) | #0058B2 | 0.035 |
| Deuteranopia (no green cones) | #004BAD | 0.013 |
| Tritanopia (no blue cones) | #006475 | 0.131 |
| Achromatopsia (no color) | #515151 | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C4AAF
#1C4AAF
oklch(44.4% 0.169 262.9)
- #6C4E00
#6C4E00
oklch(44.4% 0.091 83)
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 #1C4AAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.042
- Sapphire #2138AB ΔE 0.042
- Cobalt #1E488F ΔE 0.052
- Blueberry #464196 ΔE 0.062
- Dusk Blue #26538D ΔE 0.064
- Majorelle Blue #3F37C9 ΔE 0.064
- Light Navy #155084 ΔE 0.074
- Blue With A Hint Of Purple #533CC6 ΔE 0.078
Use #1C4AAF 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.