#23417E
Closest named color: Twilight Blue (#0A437A). oklch(38.7% 0.109 262.7), rgb(35, 65, 126).
Aa
White text reads best on this color (9.86:1).
About this color
#23417E is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.109 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.020 away. White text reads best on it, at 9.86:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.12:1 |
| White text | 9.86:1 |
Values
| HEX | #23417E |
| RGB | rgb(35, 65, 126) |
| HSL | hsl(220, 57%, 32%) |
| OKLCH | oklch(38.7% 0.109 262.7) |
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 #23417E | 9.86:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #23417E | 2.12:1 | Fails | Lc 11.4 | Not readable |
| #23417E text on white | 9.86:1 | AAA | Lc 92.6 | Preferred for body text |
| #23417E text on black | 2.12:1 | Fails | Lc -9.9 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFA
oklch(93.5% 0.024 262.1)
-
Step 200
200
#C9DAF8
oklch(88.5% 0.045 261.9)
-
Step 300
300
#A5C1F6
oklch(80.9% 0.081 263)
-
Step 400
400
#749FF2
oklch(70.7% 0.131 262.7)
-
Step 500
500
#5084EE
oklch(63% 0.169 262.8)
-
Step 600
600
#356BDC
oklch(55.5% 0.183 262.7)
-
Step 700
700
#2859BF
oklch(49.2% 0.169 262.6)
-
Step 800
800
#22499B
oklch(42.7% 0.141 262.8)
-
Step 900
900 (this color)
#23417E
oklch(38.7% 0.109 262.7)
-
Step 950
950
#132548
oklch(27% 0.069 262.3)
#23417E 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) | #214880 | 0.020 |
| Deuteranopia (no green cones) | #0D3F7D | 0.019 |
| Tritanopia (no blue cones) | #004F59 | 0.088 |
| Achromatopsia (no color) | #434343 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23417E
#23417E
oklch(38.7% 0.109 262.7)
- #593F00
#593F00
oklch(38.6% 0.08 82.1)
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 #23417E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.020
- Cobalt #1E488F ΔE 0.032
- Light Navy #155084 ΔE 0.043
- Marine Blue #01386A ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.055
- Dusk Blue #26538D ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.057
- Blueberry #464196 ΔE 0.063
Use #23417E 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.