#234487
Closest named color: Cobalt (#1E488F). oklch(40.1% 0.119 262.6), rgb(35, 68, 135).
Aa
White text reads best on this color (9.34:1).
About this color
#234487 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.119 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.016 away. White text reads best on it, at 9.34:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.24:1 |
| White text | 9.34:1 |
Values
| HEX | #234487 |
| RGB | rgb(35, 68, 135) |
| HSL | hsl(220, 59%, 33%) |
| OKLCH | oklch(40.1% 0.119 262.6) |
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 #234487 | 9.34:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #234487 | 2.24:1 | Fails | Lc 12.7 | Not readable |
| #234487 text on white | 9.34:1 | AAA | Lc 91.2 | Preferred for body text |
| #234487 text on black | 2.24:1 | Fails | Lc -11.1 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFC
oklch(93.6% 0.026 264.4)
-
Step 200
200
#C8DAFB
oklch(88.5% 0.05 262.6)
-
Step 300
300
#A2C1FB
oklch(80.9% 0.089 262.7)
-
Step 400
400
#709EF9
oklch(70.6% 0.143 262.9)
-
Step 500
500
#4A83F6
oklch(63.1% 0.183 262.5)
-
Step 600
600
#2E69E5
oklch(55.6% 0.199 262.6)
-
Step 700
700
#2157C7
oklch(49.2% 0.184 262.5)
-
Step 800
800
#1D48A1
oklch(42.8% 0.152 262.5)
-
Step 900
900 (this color)
#234487
oklch(40.1% 0.119 262.6)
-
Step 950
950
#11244B
oklch(26.9% 0.077 262.8)
#234487 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) | #1F4C89 | 0.022 |
| Deuteranopia (no green cones) | #024286 | 0.023 |
| Tritanopia (no blue cones) | #00545F | 0.095 |
| Achromatopsia (no color) | #474747 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234487
#234487
oklch(40.1% 0.119 262.6)
- #5E4300
#5E4300
oklch(40.2% 0.083 82.4)
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 #234487, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.016
- Twilight Blue #0A437A ΔE 0.030
- Light Navy #155084 ΔE 0.036
- Dusk Blue #26538D ΔE 0.044
- Deep Sea Blue #015482 ΔE 0.050
- Dark Slate Blue #483D8B ΔE 0.052
- Blueberry #464196 ΔE 0.053
- Marine Blue #01386A ΔE 0.067
Use #234487 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.