#23538E
Closest named color: Dusk Blue (#26538D). oklch(44.1% 0.11 255.2), rgb(35, 83, 142).
Aa
White text reads best on this color (7.77:1).
About this color
#23538E is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.110 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.003 away. White text reads best on it, at 7.77:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.69:1 |
| White text | 7.77:1 |
Values
| HEX | #23538E |
| RGB | rgb(35, 83, 142) |
| HSL | hsl(213, 60%, 35%) |
| OKLCH | oklch(44.1% 0.11 255.2) |
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 #23538E | 7.77:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #23538E | 2.69:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #23538E text on white | 7.77:1 | AAA | Lc 86.7 | Fine for body text |
| #23538E text on black | 2.69:1 | Fails | Lc -15.4 | Dividers and decoration only |
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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF7
oklch(93.7% 0.019 255.5)
-
Step 200
200
#CADBF1
oklch(88.6% 0.035 254.9)
-
Step 300
300
#A5C3EA
oklch(80.8% 0.064 255.1)
-
Step 400
400
#74A3E0
oklch(70.6% 0.103 255.3)
-
Step 500
500
#4F8BD7
oklch(63.1% 0.131 255.2)
-
Step 600
600
#3173C5
oklch(55.5% 0.144 255.5)
-
Step 700
700
#2360AA
oklch(49% 0.134 255.4)
-
Step 800
800 (this color)
#23538E
oklch(44.1% 0.11 255.2)
-
Step 900
900
#1F426E
oklch(37.7% 0.086 255.3)
-
Step 950
950
#132740
oklch(27% 0.054 254.9)
#23538E 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) | #375890 | 0.026 |
| Deuteranopia (no green cones) | #264E8D | 0.014 |
| Tritanopia (no blue cones) | #006169 | 0.086 |
| Achromatopsia (no color) | #525252 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23538E
#23538E
oklch(44.1% 0.11 255.2)
- #704A00
#704A00
oklch(44.1% 0.093 75.3)
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 #23538E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.003
- Light Navy #155084 ΔE 0.022
- Light Navy Blue #2E5A88 ΔE 0.028
- Deep Sea Blue #015482 ΔE 0.028
- Cobalt #1E488F ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.036
- Twilight #4E518B ΔE 0.050
- Dusk #4E5481 ΔE 0.054
Use #23538E 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.