#1C2B7B
Closest named color: Midnight Blue (#191970). oklch(33.4% 0.136 269.2), rgb(28, 43, 123).
Aa
White text reads best on this color (12.49:1).
About this color
#1C2B7B is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.136 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.047 away. White text reads best on it, at 12.49:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.68:1 |
| White text | 12.49:1 |
Values
| HEX | #1C2B7B |
| RGB | rgb(28, 43, 123) |
| HSL | hsl(231, 63%, 30%) |
| OKLCH | oklch(33.4% 0.136 269.2) |
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 #1C2B7B | 12.49:1 | AAA | Lc -101.3 | Preferred for body text |
| Black text on #1C2B7B | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #1C2B7B text on white | 12.49:1 | AAA | Lc 97.8 | Preferred for body text |
| #1C2B7B text on black | 1.68:1 | 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 900.
-
Step 50
50
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2EAFE
oklch(93.7% 0.028 268.4)
-
Step 200
200
#CAD8FF
oklch(88.4% 0.056 269.7)
-
Step 300
300
#A8BEFF
oklch(80.9% 0.096 269.8)
-
Step 400
400
#7A9AFF
oklch(70.7% 0.152 269)
-
Step 500
500
#5B7CFF
oklch(63.1% 0.198 269.4)
-
Step 600
600
#425EF5
oklch(55.6% 0.227 269.3)
-
Step 700
700
#354CD6
oklch(49.1% 0.211 269.3)
-
Step 800
800
#2B40AD
oklch(42.8% 0.175 269.1)
-
Step 900
900 (this color)
#1C2B7B
oklch(33.4% 0.136 269.2)
-
Step 950
950
#162250
oklch(27.1% 0.086 269)
#1C2B7B 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) | #00387E | 0.035 |
| Deuteranopia (no green cones) | #002F79 | 0.022 |
| Tritanopia (no blue cones) | #00404E | 0.109 |
| Achromatopsia (no color) | #343434 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C2B7B
#1C2B7B
oklch(33.4% 0.136 269.2)
- #443400
#443400
oklch(33.3% 0.068 89.7)
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 #1C2B7B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.047
- Marine Blue #01386A ΔE 0.049
- Marine #042E60 ΔE 0.053
- Royal #0C1793 ΔE 0.057
- Twilight Blue #0A437A ΔE 0.065
- Prussian Blue #1D3557 ΔE 0.072
- Dark Blue #00008B ΔE 0.079
- Navy #000080 ΔE 0.082
Use #1C2B7B 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.