#234473
Closest named color: Twilight Blue (#0A437A). oklch(38.7% 0.089 257.5), rgb(35, 68, 115).
Aa
White text reads best on this color (9.78:1).
About this color
#234473 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.089 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.022 away. White text reads best on it, at 9.78:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.14:1 |
| White text | 9.78:1 |
Values
| HEX | #234473 |
| RGB | rgb(35, 68, 115) |
| HSL | hsl(215, 53%, 29%) |
| OKLCH | oklch(38.7% 0.089 257.5) |
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 #234473 | 9.78:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #234473 | 2.14:1 | Fails | Lc 11.5 | Not readable |
| #234473 text on white | 9.78:1 | AAA | Lc 92.5 | Preferred for body text |
| #234473 text on black | 2.14:1 | Fails | Lc -10.0 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADBF2
oklch(88.6% 0.037 256)
-
Step 300
300
#A6C3EC
oklch(81% 0.066 257)
-
Step 400
400
#75A2E3
oklch(70.6% 0.108 257.5)
-
Step 500
500
#518ADB
oklch(63.2% 0.137 257.4)
-
Step 600
600
#3472C8
oklch(55.6% 0.148 257.3)
-
Step 700
700
#265FAD
oklch(49.1% 0.138 257.3)
-
Step 800
800
#214E8C
oklch(42.7% 0.114 257.2)
-
Step 900
900 (this color)
#234473
oklch(38.7% 0.089 257.5)
-
Step 950
950
#142742
oklch(27.2% 0.056 257.3)
#234473 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) | #2F4875 | 0.020 |
| Deuteranopia (no green cones) | #234072 | 0.012 |
| Tritanopia (no blue cones) | #004F56 | 0.072 |
| Achromatopsia (no color) | #444444 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234473
#234473
oklch(38.7% 0.089 257.5)
- #5C3D00
#5C3D00
oklch(38.6% 0.081 76.6)
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 #234473, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.022
- Light Navy #155084 ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.044
- Cobalt #1E488F ΔE 0.047
- Marine Blue #01386A ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.050
- Dusk Blue #26538D ΔE 0.058
- Charcoal #264653 ΔE 0.058
Use #234473 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.