#103E87
Closest named color: Twilight Blue (#0A437A). oklch(38.1% 0.132 259.8), rgb(16, 62, 135).
Aa
White text reads best on this color (10.18:1).
About this color
#103E87 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.132 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.028 away. White text reads best on it, at 10.18:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.132) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.06:1 |
| White text | 10.18:1 |
Values
| HEX | #103E87 |
| RGB | rgb(16, 62, 135) |
| HSL | hsl(217, 79%, 30%) |
| OKLCH | oklch(38.1% 0.132 259.8) |
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 #103E87 | 10.18:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #103E87 | 2.06:1 | Fails | Lc 10.8 | Not readable |
| #103E87 text on white | 10.18:1 | AAA | Lc 93.1 | Preferred for body text |
| #103E87 text on black | 2.06:1 | Fails | Lc -9.4 | 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
#DFEBFE
oklch(93.7% 0.029 259.6)
-
Step 200
200
#C4DBFE
oklch(88.6% 0.054 258.7)
-
Step 300
300
#9CC2FF
oklch(80.9% 0.096 259.7)
-
Step 400
400
#659FFF
oklch(70.6% 0.154 260)
-
Step 500
500
#3783FF
oklch(63% 0.199 259.9)
-
Step 600
600
#0768F0
oklch(55.5% 0.22 259.8)
-
Step 700
700
#0057CE
oklch(49.2% 0.198 259.7)
-
Step 800
800
#0347A9
oklch(42.7% 0.169 259.8)
-
Step 900
900 (this color)
#103E87
oklch(38.1% 0.132 259.8)
-
Step 950
950
#0B244E
oklch(26.9% 0.084 260.2)
#103E87 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) | #06478A | 0.025 |
| Deuteranopia (no green cones) | #003C86 | 0.011 |
| Tritanopia (no blue cones) | #00505C | 0.101 |
| Achromatopsia (no color) | #414141 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #103E87
#103E87
oklch(38.1% 0.132 259.8)
- #583D00
#583D00
oklch(38.1% 0.079 80.4)
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 #103E87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.028
- Cobalt #1E488F ΔE 0.034
- Marine Blue #01386A ΔE 0.053
- Light Navy #155084 ΔE 0.054
- Sapphire #2138AB ΔE 0.063
- Deep Sea Blue #015482 ΔE 0.066
- Dusk Blue #26538D ΔE 0.066
- Dark Slate Blue #483D8B ΔE 0.068
Use #103E87 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.