#1C2A73
Closest named color: Midnight Blue (#191970). oklch(32.4% 0.126 269.6), rgb(28, 42, 115).
Aa
White text reads best on this color (12.89:1).
About this color
#1C2A73 is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.126 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.041 away. White text reads best on it, at 12.89:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.62:1 |
| White text | 12.89:1 |
Values
| HEX | #1C2A73 |
| RGB | rgb(28, 42, 115) |
| HSL | hsl(230, 61%, 28%) |
| OKLCH | oklch(32.4% 0.126 269.6) |
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 #1C2A73 | 12.89:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #1C2A73 | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #1C2A73 text on white | 12.89:1 | AAA | Lc 98.6 | Preferred for body text |
| #1C2A73 text on black | 1.62:1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFD
oklch(93.7% 0.027 267.5)
-
Step 200
200
#CBD8FD
oklch(88.4% 0.053 270)
-
Step 300
300
#A8BEFF
oklch(80.9% 0.096 269.8)
-
Step 400
400
#7B9AFF
oklch(70.8% 0.152 269.4)
-
Step 500
500
#5C7CFD
oklch(63% 0.195 269.6)
-
Step 600
600
#4661EC
oklch(55.6% 0.211 269.8)
-
Step 700
700
#384FCD
oklch(49% 0.196 269.6)
-
Step 800
800
#2E42A6
oklch(42.7% 0.162 269.6)
-
Step 900
900 (this color)
#1C2A73
oklch(32.4% 0.126 269.6)
-
Step 950
950
#17224D
oklch(26.9% 0.081 269.5)
#1C2A73 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) | #003675 | 0.034 |
| Deuteranopia (no green cones) | #002E72 | 0.023 |
| Tritanopia (no blue cones) | #003D4A | 0.101 |
| Achromatopsia (no color) | #323232 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C2A73
#1C2A73
oklch(32.4% 0.126 269.6)
- #413200
#413200
oklch(32.5% 0.066 90.4)
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 #1C2A73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.041
- Marine #042E60 ΔE 0.041
- Marine Blue #01386A ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.062
- Royal #0C1793 ΔE 0.067
- Twilight Blue #0A437A ΔE 0.069
- Dark Royal Blue #02066F ΔE 0.082
- Navy #000080 ΔE 0.083
Use #1C2A73 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.