#1D316D
Closest named color: Marine Blue (#01386A). oklch(33.4% 0.107 266.6), rgb(29, 49, 109).
Aa
White text reads best on this color (12.26:1).
About this color
#1D316D is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.107 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.027 away. White text reads best on it, at 12.26:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.71:1 |
| White text | 12.26:1 |
Values
| HEX | #1D316D |
| RGB | rgb(29, 49, 109) |
| HSL | hsl(225, 58%, 27%) |
| OKLCH | oklch(33.4% 0.107 266.6) |
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 #1D316D | 12.26:1 | AAA | Lc -101.2 | Preferred for body text |
| Black text on #1D316D | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #1D316D text on white | 12.26:1 | AAA | Lc 97.6 | Preferred for body text |
| #1D316D text on black | 1.71:1 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CCD9F8
oklch(88.5% 0.045 267.4)
-
Step 300
300
#A9C0F6
oklch(81% 0.081 266.7)
-
Step 400
400
#7C9DF1
oklch(70.7% 0.129 266.8)
-
Step 500
500
#5C82EC
oklch(63.1% 0.165 266.8)
-
Step 600
600
#4369DB
oklch(55.6% 0.18 266.6)
-
Step 700
700
#3557BE
oklch(49.2% 0.167 266.4)
-
Step 800
800
#2C4799
oklch(42.6% 0.138 266.7)
-
Step 900
900 (this color)
#1D316D
oklch(33.4% 0.107 266.6)
-
Step 950
950
#172447
oklch(26.9% 0.068 266.6)
#1D316D 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) | #09396F | 0.025 |
| Deuteranopia (no green cones) | #00326C | 0.022 |
| Tritanopia (no blue cones) | #003F4A | 0.086 |
| Achromatopsia (no color) | #353535 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D316D
#1D316D
oklch(33.4% 0.107 266.6)
- #463300
#463300
oklch(33.4% 0.068 85.7)
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 #1D316D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.027
- Marine #042E60 ΔE 0.034
- Prussian Blue #1D3557 ΔE 0.043
- Twilight Blue #0A437A ΔE 0.053
- Midnight Blue #191970 ΔE 0.060
- Dark Blue Grey #1F3B4D ΔE 0.070
- Midnight Green #073B4C ΔE 0.074
- Space Cadet #2B2D42 ΔE 0.077
Use #1D316D 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.