#015397
Closest named color: Dusk Blue (#26538D). oklch(44% 0.13 251.8), rgb(1, 83, 151).
Aa
White text reads best on this color (7.81:1).
About this color
#015397 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.130 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.024 away. White text reads best on it, at 7.81:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.68:1 |
| White text | 7.81:1 |
Values
| HEX | #015397 |
| RGB | rgb(1, 83, 151) |
| HSL | hsl(207, 99%, 30%) |
| OKLCH | oklch(44% 0.13 251.8) |
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 #015397 | 7.81:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #015397 | 2.68:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #015397 text on white | 7.81:1 | AAA | Lc 86.5 | Fine for body text |
| #015397 text on black | 2.68:1 | Fails | Lc -15.6 | 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
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C6DCF5
oklch(88.6% 0.042 251.7)
-
Step 300
300
#9DC4F1
oklch(80.8% 0.076 252.3)
-
Step 400
400
#65A5EA
oklch(70.8% 0.121 251.5)
-
Step 500
500
#358CE4
oklch(63.1% 0.156 252)
-
Step 600
600
#0074D0
oklch(55.6% 0.166 251.9)
-
Step 700
700
#0061B0
oklch(49% 0.147 252)
-
Step 800
800 (this color)
#015397
oklch(44% 0.13 251.8)
-
Step 900
900
#0D4375
oklch(37.8% 0.101 251.4)
-
Step 950
950
#0B2745
oklch(26.9% 0.065 252.8)
#015397 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) | #2E599A | 0.034 |
| Deuteranopia (no green cones) | #0D4C96 | 0.019 |
| Tritanopia (no blue cones) | #00646D | 0.097 |
| Achromatopsia (no color) | #525252 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #015397
#015397
oklch(44% 0.13 251.8)
- #724800
#724800
oklch(43.9% 0.094 71.6)
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 #015397, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.024
- Light Navy #155084 ΔE 0.031
- Cobalt #1E488F ΔE 0.032
- Deep Sea Blue #015482 ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.050
- Peacock Blue #016795 ΔE 0.061
- Twilight Blue #0A437A ΔE 0.063
Use #015397 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.