#23436D
Closest named color: Twilight Blue (#0A437A). oklch(38% 0.082 255.9), rgb(35, 67, 109).
Aa
White text reads best on this color (10.02:1).
About this color
#23436D is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.082 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.027 away. White text reads best on it, at 10.02:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.09:1 |
| White text | 10.02:1 |
Values
| HEX | #23436D |
| RGB | rgb(35, 67, 109) |
| HSL | hsl(214, 51%, 28%) |
| OKLCH | oklch(38% 0.082 255.9) |
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 #23436D | 10.02:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #23436D | 2.09:1 | Fails | Lc 10.9 | Not readable |
| #23436D text on white | 10.02:1 | AAA | Lc 93.1 | Preferred for body text |
| #23436D text on black | 2.09:1 | Fails | Lc -9.4 | 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
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CBDBF0
oklch(88.6% 0.034 255.2)
-
Step 300
300
#A7C3E8
oklch(80.9% 0.061 255.5)
-
Step 400
400
#78A3DD
oklch(70.7% 0.098 256.1)
-
Step 500
500
#548BD4
oklch(63.2% 0.125 256)
-
Step 600
600
#3773C1
oklch(55.5% 0.137 256.1)
-
Step 700
700
#2A60A7
oklch(49% 0.127 256.4)
-
Step 800
800
#244F87
oklch(42.7% 0.105 256.1)
-
Step 900
900 (this color)
#23436D
oklch(38% 0.082 255.9)
-
Step 950
950
#15273F
oklch(27% 0.051 256.1)
#23436D 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) | #31466F | 0.020 |
| Deuteranopia (no green cones) | #263F6C | 0.012 |
| Tritanopia (no blue cones) | #004D52 | 0.068 |
| Achromatopsia (no color) | #424242 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23436D
#23436D
oklch(38% 0.082 255.9)
- #5A3B00
#5A3B00
oklch(37.9% 0.08 75.8)
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 #23436D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.027
- Dark Grey Blue #29465B ΔE 0.035
- Marine Blue #01386A ΔE 0.046
- Charcoal #264653 ΔE 0.049
- Light Navy #155084 ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.055
- Deep Sea Blue #015482 ΔE 0.056
- Cobalt #1E488F ΔE 0.057
Use #23436D 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.