#1C406D
Closest named color: Twilight Blue (#0A437A). oklch(37% 0.088 255.3), rgb(28, 64, 109).
Aa
White text reads best on this color (10.48:1).
About this color
#1C406D is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.088 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.024 away. White text reads best on it, at 10.48:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.00:1 |
| White text | 10.48:1 |
Values
| HEX | #1C406D |
| RGB | rgb(28, 64, 109) |
| HSL | hsl(213, 59%, 27%) |
| OKLCH | oklch(37% 0.088 255.3) |
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 #1C406D | 10.48:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #1C406D | 2.00:1 | Fails | Lc 9.9 | Not readable |
| #1C406D text on white | 10.48:1 | AAA | Lc 94.1 | Preferred for body text |
| #1C406D text on black | 2.00:1 | Fails | Lc -8.5 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#C9DBF2
oklch(88.5% 0.037 254.6)
-
Step 300
300
#A5C3EB
oklch(80.9% 0.066 255.7)
-
Step 400
400
#73A3E2
oklch(70.7% 0.106 255.6)
-
Step 500
500
#4D8BD9
oklch(63.1% 0.135 255.1)
-
Step 600
600
#2F73C7
oklch(55.6% 0.147 255.5)
-
Step 700
700
#2160AC
oklch(49.1% 0.137 255.5)
-
Step 800
800
#1D4F8B
oklch(42.7% 0.113 255.1)
-
Step 900
900 (this color)
#1C406D
oklch(37% 0.088 255.3)
-
Step 950
950
#122741
oklch(27% 0.056 254.8)
#1C406D 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) | #2B436F | 0.020 |
| Deuteranopia (no green cones) | #1F3C6C | 0.012 |
| Tritanopia (no blue cones) | #004A51 | 0.068 |
| Achromatopsia (no color) | #3F3F3F | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C406D
#1C406D
oklch(37% 0.088 255.3)
- #573900
#573900
oklch(37% 0.078 75.9)
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 #1C406D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.024
- Marine Blue #01386A ΔE 0.033
- Dark Grey Blue #29465B ΔE 0.043
- Prussian Blue #1D3557 ΔE 0.047
- Charcoal #264653 ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.055
- Light Navy #155084 ΔE 0.056
- Cobalt #1E488F ΔE 0.060
Use #1C406D 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.