#1C1C4E
Closest named color: Dark Indigo (#1F0954). oklch(26% 0.09 278.2), rgb(28, 28, 78).
Aa
White text reads best on this color (15.84:1).
About this color
#1C1C4E is a dark, moderately saturated blue. In OKLCH its lightness is 26%, its chroma 0.090 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.041 away. White text reads best on it, at 15.84:1.
| Hue family | Blues |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.32:1 |
| White text | 15.84:1 |
Values
| HEX | #1C1C4E |
| RGB | rgb(28, 28, 78) |
| HSL | hsl(240, 47%, 21%) |
| OKLCH | oklch(26% 0.09 278.2) |
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 #1C1C4E | 15.84:1 | AAA | Lc -105.2 | Preferred for body text |
| Black text on #1C1C4E | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #1C1C4E text on white | 15.84:1 | AAA | Lc 102.6 | Preferred for body text |
| #1C1C4E text on black | 1.32:1 | 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
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E5E8FF
oklch(93.6% 0.031 279.9)
-
Step 200
200
#D0D6FF
oklch(88.5% 0.057 278.6)
-
Step 300
300
#B2BBFF
oklch(81% 0.097 278.2)
-
Step 400
400
#8C94FF
oklch(70.7% 0.155 278.4)
-
Step 500
500
#7274FF
oklch(63% 0.202 278.3)
-
Step 600
600
#5D53F8
oklch(55.6% 0.236 278.1)
-
Step 700
700
#4E41D8
oklch(49.1% 0.22 278.4)
-
Step 800
800
#3F38AF
oklch(42.8% 0.182 278)
-
Step 900
900
#34328A
oklch(37.6% 0.142 278.1)
-
Step 950
950 (this color)
#1C1C4E
oklch(26% 0.09 278.2)
#1C1C4E 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) | #002450 | 0.035 |
| Deuteranopia (no green cones) | #00204D | 0.033 |
| Tritanopia (no blue cones) | #002831 | 0.079 |
| Achromatopsia (no color) | #222222 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C1C4E
#1C1C4E
oklch(26% 0.09 278.2)
- #2B2400
#2B2400
oklch(26% 0.054 98.3)
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 #1C1C4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.041
- Oxford Blue #1B263B ΔE 0.051
- Navy Blue #001146 ΔE 0.058
- Marine #042E60 ΔE 0.060
- Midnight Blue #191970 ΔE 0.062
- Dark #1B2431 ΔE 0.064
- Space Cadet #2B2D42 ΔE 0.068
- Darkblue #030764 ΔE 0.070
Use #1C1C4E 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.