#1D2659
Closest named color: Marine (#042E60). oklch(29.3% 0.092 272), rgb(29, 38, 89).
Aa
White text reads best on this color (14.24:1).
About this color
#1D2659 is a dark, moderately saturated blue. In OKLCH its lightness is 29%, its chroma 0.092 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.031 away. White text reads best on it, at 14.24:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.47:1 |
| White text | 14.24:1 |
Values
| HEX | #1D2659 |
| RGB | rgb(29, 38, 89) |
| HSL | hsl(231, 51%, 23%) |
| OKLCH | oklch(29.3% 0.092 272) |
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 #1D2659 | 14.24:1 | AAA | Lc -103.7 | Preferred for body text |
| Black text on #1D2659 | 1.47:1 | Fails | Lc 0.0 | Not readable |
| #1D2659 text on white | 14.24:1 | AAA | Lc 100.8 | Preferred for body text |
| #1D2659 text on black | 1.47:1 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FF
oklch(93.5% 0.031 271.7)
-
Step 200
200
#CCD8FF
oklch(88.6% 0.055 271.8)
-
Step 300
300
#ABBDFF
oklch(80.9% 0.096 272.3)
-
Step 400
400
#8098FF
oklch(70.7% 0.153 272.1)
-
Step 500
500
#627AFF
oklch(63.1% 0.198 271.8)
-
Step 600
600
#4A57FD
oklch(55.5% 0.242 272.1)
-
Step 700
700
#3C46DD
oklch(49.2% 0.225 271.8)
-
Step 800
800
#313BB2
oklch(42.7% 0.186 271.9)
-
Step 900
900
#2A358D
oklch(37.8% 0.145 272)
-
Step 950
950 (this color)
#1D2659
oklch(29.3% 0.092 272)
#1D2659 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) | #062D5B | 0.027 |
| Deuteranopia (no green cones) | #002858 | 0.028 |
| Tritanopia (no blue cones) | #00323B | 0.078 |
| Achromatopsia (no color) | #2B2B2B | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D2659
#1D2659
oklch(29.3% 0.092 272)
- #372B00
#372B00
oklch(29.4% 0.06 92.3)
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 #1D2659, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.031
- Prussian Blue #1D3557 ΔE 0.047
- Midnight Blue #191970 ΔE 0.052
- Oxford Blue #1B263B ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.056
- Marine Blue #01386A ΔE 0.058
- Dark Indigo #1F0954 ΔE 0.067
- Gunmetal #293241 ΔE 0.067
Use #1D2659 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.