#103889
Closest named color: Twilight Blue (#0A437A). oklch(36.9% 0.143 262.2), rgb(16, 56, 137).
Aa
White text reads best on this color (10.77:1).
About this color
#103889 is a dark, vivid blue. In OKLCH its lightness is 37%, its chroma 0.143 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.042 away. White text reads best on it, at 10.77:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.94:1 |
| White text | 10.77:1 |
Values
| HEX | #103889 |
| RGB | rgb(16, 56, 137) |
| HSL | hsl(220, 79%, 30%) |
| OKLCH | oklch(36.9% 0.143 262.2) |
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 #103889 | 10.77:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #103889 | 1.94:1 | Fails | Lc 9.6 | Not readable |
| #103889 text on white | 10.77:1 | AAA | Lc 94.3 | Preferred for body text |
| #103889 text on black | 1.94:1 | Fails | Lc -8.2 | 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
#DFEAFF
oklch(93.5% 0.031 263.5)
-
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
#6B9EFF
oklch(70.7% 0.153 262.2)
-
Step 500
500
#4282FF
oklch(63.2% 0.198 262)
-
Step 600
600
#1763FB
oklch(55.7% 0.237 262.2)
-
Step 700
700
#0950DB
oklch(49.1% 0.221 262.3)
-
Step 800
800
#0C43B1
oklch(42.8% 0.183 262.2)
-
Step 900
900 (this color)
#103889
oklch(36.9% 0.143 262.2)
-
Step 950
950
#0C2352
oklch(27% 0.091 262.4)
#103889 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) | #00438C | 0.029 |
| Deuteranopia (no green cones) | #003887 | 0.009 |
| Tritanopia (no blue cones) | #004D5A | 0.111 |
| Achromatopsia (no color) | #3E3E3E | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #103889
#103889
oklch(36.9% 0.143 262.2)
- #533B00
#533B00
oklch(36.9% 0.076 82.8)
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 #103889, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.042
- Cobalt #1E488F ΔE 0.048
- Marine Blue #01386A ΔE 0.055
- Sapphire #2138AB ΔE 0.059
- Royal #0C1793 ΔE 0.069
- Light Navy #155084 ΔE 0.071
- Dark Slate Blue #483D8B ΔE 0.074
- Blueberry #464196 ΔE 0.076
Use #103889 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.