#23316D
Closest named color: Marine Blue (#01386A). oklch(33.8% 0.105 270), rgb(35, 49, 109).
Aa
White text reads best on this color (12.12:1).
About this color
#23316D is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.105 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.032 away. White text reads best on it, at 12.12:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.73:1 |
| White text | 12.12:1 |
Values
| HEX | #23316D |
| RGB | rgb(35, 49, 109) |
| HSL | hsl(229, 51%, 28%) |
| OKLCH | oklch(33.8% 0.105 270) |
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 #23316D | 12.12:1 | AAA | Lc -101.0 | Preferred for body text |
| Black text on #23316D | 1.73:1 | Fails | Lc 0.0 | Not readable |
| #23316D text on white | 12.12:1 | AAA | Lc 97.4 | Preferred for body text |
| #23316D text on black | 1.73:1 | 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
#E4EAFA
oklch(93.7% 0.023 269.4)
-
Step 200
200
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#ACBFF5
oklch(80.9% 0.079 269.5)
-
Step 400
400
#829CF0
oklch(70.8% 0.127 269.9)
-
Step 500
500
#6480EA
oklch(63% 0.162 270.1)
-
Step 600
600
#4D67D9
oklch(55.6% 0.177 270.1)
-
Step 700
700
#3E55BC
oklch(49.1% 0.164 269.9)
-
Step 800
800
#334698
oklch(42.7% 0.136 269.9)
-
Step 900
900 (this color)
#23316D
oklch(33.8% 0.105 270)
-
Step 950
950
#1A2447
oklch(27.1% 0.066 269.6)
#23316D 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) | #0C396F | 0.028 |
| Deuteranopia (no green cones) | #00336C | 0.029 |
| Tritanopia (no blue cones) | #003F4A | 0.088 |
| Achromatopsia (no color) | #363636 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23316D
#23316D
oklch(33.8% 0.105 270)
- #453500
#453500
oklch(33.7% 0.069 90)
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 #23316D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.032
- Marine #042E60 ΔE 0.040
- Prussian Blue #1D3557 ΔE 0.043
- Twilight Blue #0A437A ΔE 0.054
- Midnight Blue #191970 ΔE 0.063
- Dark Blue Grey #1F3B4D ΔE 0.070
- Space Cadet #2B2D42 ΔE 0.076
- Midnight Green #073B4C ΔE 0.076
Use #23316D 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.