#23406A
Closest named color: Twilight Blue (#0A437A). oklch(37.1% 0.081 257.7), rgb(35, 64, 106).
Aa
White text reads best on this color (10.43:1).
About this color
#23406A is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.081 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.031 away. White text reads best on it, at 10.43:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.01:1 |
| White text | 10.43:1 |
Values
| HEX | #23406A |
| RGB | rgb(35, 64, 106) |
| HSL | hsl(215, 50%, 28%) |
| OKLCH | oklch(37.1% 0.081 257.7) |
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 #23406A | 10.43:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #23406A | 2.01:1 | Fails | Lc 9.9 | Not readable |
| #23406A text on white | 10.43:1 | AAA | Lc 94.0 | Preferred for body text |
| #23406A text on black | 2.01:1 | Fails | Lc -8.5 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAF0
oklch(88.5% 0.034 259.4)
-
Step 300
300
#A9C2E8
oklch(80.8% 0.061 258.7)
-
Step 400
400
#7AA2DD
oklch(70.6% 0.098 258)
-
Step 500
500
#588AD3
oklch(63.1% 0.123 257.8)
-
Step 600
600
#3D73C1
oklch(55.7% 0.135 257.8)
-
Step 700
700
#2F60A6
oklch(49.2% 0.124 257.7)
-
Step 800
800
#274E87
oklch(42.6% 0.105 258)
-
Step 900
900 (this color)
#23406A
oklch(37.1% 0.081 257.7)
-
Step 950
950
#16273F
oklch(27.1% 0.05 257.1)
#23406A 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) | #2E436C | 0.017 |
| Deuteranopia (no green cones) | #243D69 | 0.009 |
| Tritanopia (no blue cones) | #004A50 | 0.067 |
| Achromatopsia (no color) | #404040 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23406A
#23406A
oklch(37.1% 0.081 257.7)
- #563A00
#563A00
oklch(37.1% 0.077 78.3)
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 #23406A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.031
- Dark Grey Blue #29465B ΔE 0.037
- Marine Blue #01386A ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.045
- Charcoal #264653 ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.051
- Light Navy #155084 ΔE 0.058
- Midnight Green #073B4C ΔE 0.061
Use #23406A 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.