#233470
Closest named color: Marine Blue (#01386A). oklch(34.7% 0.106 268.5), rgb(35, 52, 112).
Aa
White text reads best on this color (11.68:1).
About this color
#233470 is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.106 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.030 away. White text reads best on it, at 11.68:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.106) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.79:1 |
| White text | 11.68:1 |
Values
| HEX | #233470 |
| RGB | rgb(35, 52, 112) |
| HSL | hsl(227, 52%, 29%) |
| OKLCH | oklch(34.7% 0.106 268.5) |
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 #233470 | 11.68:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #233470 | 1.79:1 | Fails | Lc 7.3 | Not readable |
| #233470 text on white | 11.68:1 | AAA | Lc 96.6 | Preferred for body text |
| #233470 text on black | 1.79:1 | 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
#CDD9F7
oklch(88.6% 0.043 268.2)
-
Step 300
300
#ABBFF5
oklch(80.9% 0.08 268.8)
-
Step 400
400
#7F9CF0
oklch(70.6% 0.128 268.6)
-
Step 500
500
#6181EB
oklch(63.1% 0.163 268.8)
-
Step 600
600
#4968D9
oklch(55.6% 0.176 268.5)
-
Step 700
700
#3B56BC
oklch(49.1% 0.163 268.5)
-
Step 800
800
#304798
oklch(42.7% 0.135 268.2)
-
Step 900
900 (this color)
#233470
oklch(34.7% 0.106 268.5)
-
Step 950
950
#192447
oklch(27.1% 0.067 268.5)
#233470 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) | #113C72 | 0.026 |
| Deuteranopia (no green cones) | #00356F | 0.028 |
| Tritanopia (no blue cones) | #00424C | 0.089 |
| Achromatopsia (no color) | #383838 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #233470
#233470
oklch(34.7% 0.106 268.5)
- #493700
#493700
oklch(34.7% 0.071 88.2)
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 #233470, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.030
- Twilight Blue #0A437A ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.046
- Marine #042E60 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.070
- Midnight Blue #191970 ΔE 0.070
- Cobalt #1E488F ΔE 0.072
- Dark Grey Blue #29465B ΔE 0.074
Use #233470 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.