#013699
Closest named color: Sapphire (#2138AB). oklch(37.7% 0.169 261.7), rgb(1, 54, 153).
Aa
White text reads best on this color (10.55:1).
About this color
#013699 is a dark, vivid blue. In OKLCH its lightness is 38%, its chroma 0.169 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.038 away. White text reads best on it, at 10.55:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | vivid (0.169) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 1.98:1 |
| White text | 10.55:1 |
Values
| HEX | #013699 |
| RGB | rgb(1, 54, 153) |
| HSL | hsl(219, 99%, 30%) |
| OKLCH | oklch(37.7% 0.169 261.7) |
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 #013699 | 10.55:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #013699 | 1.98:1 | Fails | Lc 10.4 | Not readable |
| #013699 text on white | 10.55:1 | AAA | Lc 93.5 | Preferred for body text |
| #013699 text on black | 1.98:1 | Fails | Lc -9.0 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFF
oklch(93.7% 0.03 260.7)
-
Step 200
200
#C5DAFF
oklch(88.5% 0.056 261.8)
-
Step 300
300
#9FC1FF
oklch(80.9% 0.096 262.2)
-
Step 400
400
#6A9EFF
oklch(70.6% 0.153 261.9)
-
Step 500
500
#4082FF
oklch(63.1% 0.198 261.6)
-
Step 600
600
#0962FF
oklch(55.7% 0.245 261.7)
-
Step 700
700
#0050DC
oklch(49.1% 0.223 261.8)
-
Step 800
800
#0041B6
oklch(42.7% 0.194 261.7)
-
Step 900
900 (this color)
#013699
oklch(37.7% 0.169 261.7)
-
Step 950
950
#05215A
oklch(27% 0.108 262)
#013699 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) | #00469C | 0.041 |
| Deuteranopia (no green cones) | #003897 | 0.006 |
| Tritanopia (no blue cones) | #005162 | 0.129 |
| Achromatopsia (no color) | #3F3F3F | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #013699
#013699
oklch(37.7% 0.169 261.7)
- #563C00
#563C00
oklch(37.6% 0.078 81.1)
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 #013699, closest first.
No curated palette has a color within ΔE 0.04 of #013699.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.038
- Cobalt #1E488F ΔE 0.057
- Royal #0C1793 ΔE 0.061
- Twilight Blue #0A437A ΔE 0.065
- Cobalt Blue #030AA7 ΔE 0.069
- Ultramarine #2000B1 ΔE 0.073
- Indigo Blue #3A18B1 ΔE 0.075
- Marine Blue #01386A ΔE 0.080
Use #013699 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.