#155498
Closest named color: Dusk Blue (#26538D). oklch(44.6% 0.127 254.1), rgb(21, 84, 152).
Aa
White text reads best on this color (7.62:1).
About this color
#155498 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.127 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.020 away. White text reads best on it, at 7.62:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.75:1 |
| White text | 7.62:1 |
Values
| HEX | #155498 |
| RGB | rgb(21, 84, 152) |
| HSL | hsl(211, 76%, 34%) |
| OKLCH | oklch(44.6% 0.127 254.1) |
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 #155498 | 7.62:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #155498 | 2.75:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #155498 text on white | 7.62:1 | AAA | Lc 86.0 | Fine for body text |
| #155498 text on black | 2.75:1 | Fails | Lc -16.0 | 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
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C7DBF5
oklch(88.5% 0.042 255)
-
Step 300
300
#A0C4F0
oklch(81% 0.074 253.7)
-
Step 400
400
#6BA4E9
oklch(70.8% 0.118 254)
-
Step 500
500
#408BE2
oklch(63.1% 0.151 254.1)
-
Step 600
600
#1973D0
oklch(55.6% 0.164 254)
-
Step 700
700
#0760B4
oklch(49.2% 0.152 253.9)
-
Step 800
800 (this color)
#155498
oklch(44.6% 0.127 254.1)
-
Step 900
900
#154274
oklch(37.7% 0.098 253.8)
-
Step 950
950
#0E2744
oklch(27% 0.062 253.9)
#155498 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) | #315A9B | 0.030 |
| Deuteranopia (no green cones) | #154E97 | 0.017 |
| Tritanopia (no blue cones) | #00646E | 0.095 |
| Achromatopsia (no color) | #545454 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155498
#155498
oklch(44.6% 0.127 254.1)
- #734B00
#734B00
oklch(44.7% 0.095 74.1)
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 #155498, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.020
- Light Navy #155084 ΔE 0.034
- Cobalt #1E488F ΔE 0.035
- Deep Sea Blue #015482 ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.042
- Peacock Blue #016795 ΔE 0.057
- Twilight #4E518B ΔE 0.060
Use #155498 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.