#23518F
Closest named color: Dusk Blue (#26538D). oklch(43.7% 0.114 256.8), rgb(35, 81, 143).
Aa
White text reads best on this color (7.93:1).
About this color
#23518F is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.114 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.008 away. White text reads best on it, at 7.93:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.64:1 |
| White text | 7.93:1 |
Values
| HEX | #23518F |
| RGB | rgb(35, 81, 143) |
| HSL | hsl(214, 61%, 35%) |
| OKLCH | oklch(43.7% 0.114 256.8) |
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 #23518F | 7.93:1 | AAA | Lc -91.9 | Preferred for body text |
| Black text on #23518F | 2.64:1 | Fails | Lc 16.8 | Dividers and decoration only |
| #23518F text on white | 7.93:1 | AAA | Lc 87.2 | Fine for body text |
| #23518F text on black | 2.64:1 | Fails | Lc -14.9 | 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 800.
-
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
#A5C3EC
oklch(80.9% 0.067 256.3)
-
Step 400
400
#75A3E3
oklch(70.8% 0.107 256.8)
-
Step 500
500
#508ADA
oklch(63.1% 0.136 256.8)
-
Step 600
600
#3272C8
oklch(55.5% 0.149 256.8)
-
Step 700
700
#255FAD
oklch(49% 0.138 257)
-
Step 800
800 (this color)
#23518F
oklch(43.7% 0.114 256.8)
-
Step 900
900
#204270
oklch(37.8% 0.089 256.6)
-
Step 950
950
#132741
oklch(27% 0.055 255.7)
#23518F 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) | #335691 | 0.023 |
| Deuteranopia (no green cones) | #204C8E | 0.015 |
| Tritanopia (no blue cones) | #006069 | 0.089 |
| Achromatopsia (no color) | #515151 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23518F
#23518F
oklch(43.7% 0.114 256.8)
- #6E4A00
#6E4A00
oklch(43.8% 0.092 76.9)
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 #23518F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.008
- Light Navy #155084 ΔE 0.022
- Cobalt #1E488F ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.034
- Denim Blue #3B5B92 ΔE 0.041
- Twilight #4E518B ΔE 0.051
- Twilight Blue #0A437A ΔE 0.057
Use #23518F 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.