#155393
Closest named color: Dusk Blue (#26538D). oklch(44% 0.121 253.2), rgb(21, 83, 147).
Aa
White text reads best on this color (7.80:1).
About this color
#155393 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.121 and its hue 253°. 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 7.80:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.69:1 |
| White text | 7.80:1 |
Values
| HEX | #155393 |
| RGB | rgb(21, 83, 147) |
| HSL | hsl(210, 75%, 33%) |
| OKLCH | oklch(44% 0.121 253.2) |
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 #155393 | 7.80:1 | AAA | Lc -91.4 | Preferred for body text |
| Black text on #155393 | 2.69:1 | Fails | Lc 17.4 | Dividers and decoration only |
| #155393 text on white | 7.80:1 | AAA | Lc 86.6 | Fine for body text |
| #155393 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
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF8
oklch(93.6% 0.021 254.9)
-
Step 200
200
#C7DBF3
oklch(88.4% 0.04 253)
-
Step 300
300
#A1C4EE
oklch(80.9% 0.071 253.2)
-
Step 400
400
#6CA4E6
oklch(70.7% 0.114 253.3)
-
Step 500
500
#428CDE
oklch(63.2% 0.144 253)
-
Step 600
600
#1C74CC
oklch(55.7% 0.157 253.1)
-
Step 700
700
#0C61B1
oklch(49.2% 0.147 253.2)
-
Step 800
800 (this color)
#155393
oklch(44% 0.121 253.2)
-
Step 900
900
#174272
oklch(37.6% 0.095 253.7)
-
Step 950
950
#0F2743
oklch(27% 0.06 253.9)
#155393 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) | #325895 | 0.030 |
| Deuteranopia (no green cones) | #1B4D92 | 0.017 |
| Tritanopia (no blue cones) | #00626C | 0.089 |
| Achromatopsia (no color) | #525252 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155393
#155393
oklch(44% 0.121 253.2)
- #714900
#714900
oklch(44% 0.094 73.4)
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 #155393, 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 #155084 ΔE 0.025
- Cobalt #1E488F ΔE 0.031
- Deep Sea Blue #015482 ΔE 0.031
- Light Navy Blue #2E5A88 ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.044
- Peacock Blue #016795 ΔE 0.058
- Twilight #4E518B ΔE 0.060
Use #155393 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.