#23588D
Closest named color: Dusk Blue (#26538D). oklch(45.2% 0.103 251.2), rgb(35, 88, 141).
Aa
White text reads best on this color (7.36:1).
About this color
#23588D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.103 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.015 away. White text reads best on it, at 7.36:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.85:1 |
| White text | 7.36:1 |
Values
| HEX | #23588D |
| RGB | rgb(35, 88, 141) |
| HSL | hsl(210, 60%, 35%) |
| OKLCH | oklch(45.2% 0.103 251.2) |
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 #23588D | 7.36:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #23588D | 2.85:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #23588D text on white | 7.36:1 | AAA | Lc 85.3 | Fine for body text |
| #23588D text on black | 2.85:1 | Fails | Lc -16.7 | 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
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#C9DBEF
oklch(88.4% 0.034 251)
-
Step 300
300
#A4C4E7
oklch(80.9% 0.061 250.9)
-
Step 400
400
#72A5DB
oklch(70.7% 0.096 250.7)
-
Step 500
500
#4B8DD1
oklch(63% 0.123 251)
-
Step 600
600
#2B76BF
oklch(55.6% 0.135 251.2)
-
Step 700
700
#1D63A4
oklch(49.1% 0.124 250.8)
-
Step 800
800 (this color)
#23588D
oklch(45.2% 0.103 251.2)
-
Step 900
900
#1D436B
oklch(37.6% 0.081 251.9)
-
Step 950
950
#12283E
oklch(27.1% 0.05 250.2)
#23588D 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) | #405B8F | 0.032 |
| Deuteranopia (no green cones) | #30518C | 0.022 |
| Tritanopia (no blue cones) | #00656C | 0.078 |
| Achromatopsia (no color) | #565656 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23588D
#23588D
oklch(45.2% 0.103 251.2)
- #774B00
#774B00
oklch(45.2% 0.097 71.2)
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 #23588D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.015
- Light Navy Blue #2E5A88 ΔE 0.015
- Denim Blue #3B5B92 ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.029
- Light Navy #155084 ΔE 0.030
- Denim #3B638C ΔE 0.043
- Peacock Blue #016795 ΔE 0.043
- Dusky Blue #475F94 ΔE 0.047
Use #23588D 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.