#23405A
Closest named color: Dark Grey Blue (#29465B). oklch(36.1% 0.057 247.2), rgb(35, 64, 90).
Aa
White text reads best on this color (10.75:1).
About this color
#23405A is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.057 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.022 away. White text reads best on it, at 10.75:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.95:1 |
| White text | 10.75:1 |
Values
| HEX | #23405A |
| RGB | rgb(35, 64, 90) |
| HSL | hsl(208, 44%, 25%) |
| OKLCH | oklch(36.1% 0.057 247.2) |
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 #23405A | 10.75:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #23405A | 1.95:1 | Fails | Lc 9.1 | Not readable |
| #23405A text on white | 10.75:1 | AAA | Lc 94.8 | Preferred for body text |
| #23405A text on black | 1.95:1 | Fails | Lc -7.8 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE8
oklch(88.5% 0.023 246.1)
-
Step 300
300
#ABC4DB
oklch(80.9% 0.042 246.1)
-
Step 400
400
#7EA5CA
oklch(70.7% 0.069 247.5)
-
Step 500
500
#5C8EBC
oklch(63% 0.088 247.4)
-
Step 600
600
#4178A8
oklch(55.6% 0.095 246.9)
-
Step 700
700
#336590
oklch(49.2% 0.088 246.7)
-
Step 800
800
#2B5275
oklch(42.7% 0.073 247.5)
-
Step 900
900 (this color)
#23405A
oklch(36.1% 0.057 247.2)
-
Step 950
950
#172837
oklch(26.9% 0.036 246.3)
#23405A 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) | #35415B | 0.024 |
| Deuteranopia (no green cones) | #2E3B59 | 0.019 |
| Tritanopia (no blue cones) | #004649 | 0.048 |
| Achromatopsia (no color) | #3E3E3E | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23405A
#23405A
oklch(36.1% 0.057 247.2)
- #52371A
#52371A
oklch(36.2% 0.058 66.1)
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 #23405A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.022
- Dark Blue Grey #1F3B4D ΔE 0.026
- Charcoal #264653 ΔE 0.027
- Prussian Blue #1D3557 ΔE 0.037
- Midnight Green #073B4C ΔE 0.039
- Onyx #343A40 ΔE 0.047
- Marine Blue #01386A ΔE 0.050
- Charcoal Grey #3C4142 ΔE 0.053
Use #23405A 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.