#1A1C48
Closest named color: Oxford Blue (#1B263B). oklch(25.3% 0.081 277), rgb(26, 28, 72).
Aa
White text reads best on this color (16.10:1).
About this color
#1A1C48 is a dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.081 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.044 away. White text reads best on it, at 16.10:1.
| Hue family | Blues |
| Lightness | dark (25%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.30:1 |
| White text | 16.10:1 |
Values
| HEX | #1A1C48 |
| RGB | rgb(26, 28, 72) |
| HSL | hsl(237, 47%, 19%) |
| OKLCH | oklch(25.3% 0.081 277) |
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 #1A1C48 | 16.10:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #1A1C48 | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #1A1C48 text on white | 16.10:1 | AAA | Lc 102.9 | Preferred for body text |
| #1A1C48 text on black | 1.30:1 | Fails | Lc 0.0 | Not readable |
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 950.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FD
oklch(93.7% 0.027 276.8)
-
Step 200
200
#D0D7FD
oklch(88.6% 0.053 277)
-
Step 300
300
#B1BBFE
oklch(80.9% 0.095 277.5)
-
Step 400
400
#8A95FE
oklch(70.7% 0.153 277.2)
-
Step 500
500
#7077FC
oklch(63.2% 0.194 277)
-
Step 600
600
#5B5BEB
oklch(55.7% 0.211 277)
-
Step 700
700
#4B49CD
oklch(49.1% 0.198 276.9)
-
Step 800
800
#3D3DA5
oklch(42.6% 0.163 277)
-
Step 900
900
#333683
oklch(37.7% 0.127 276.8)
-
Step 950
950 (this color)
#1A1C48
oklch(25.3% 0.081 277)
#1A1C48 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) | #02234A | 0.031 |
| Deuteranopia (no green cones) | #001F47 | 0.031 |
| Tritanopia (no blue cones) | #02262E | 0.071 |
| Achromatopsia (no color) | #212121 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A1C48
#1A1C48
oklch(25.3% 0.081 277)
- #2A2200
#2A2200
oklch(25.4% 0.052 96)
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 #1A1C48, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.044
- Dark Indigo #1F0954 ΔE 0.046
- Navy Blue #001146 ΔE 0.053
- Dark #1B2431 ΔE 0.055
- Rich Black #0D1B2A ΔE 0.062
- Marine #042E60 ΔE 0.065
- Space Cadet #2B2D42 ΔE 0.067
- Midnight Blue #191970 ΔE 0.072
Use #1A1C48 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.