#104F8C
Closest named color: Light Navy (#155084). oklch(42.4% 0.118 252.5), rgb(16, 79, 140).
Aa
White text reads best on this color (8.33:1).
About this color
#104F8C is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.118 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.014 away. White text reads best on it, at 8.33:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.51:1 |
| White text | 8.33:1 |
Values
| HEX | #104F8C |
| RGB | rgb(16, 79, 140) |
| HSL | hsl(210, 79%, 31%) |
| OKLCH | oklch(42.4% 0.118 252.5) |
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 #104F8C | 8.33:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #104F8C | 2.51:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #104F8C text on white | 8.33:1 | AAA | Lc 88.3 | Fine for body text |
| #104F8C text on black | 2.51:1 | Fails | Lc -13.9 | 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 800.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C8DBF2
oklch(88.4% 0.038 253.2)
-
Step 300
300
#A1C4ED
oklch(80.9% 0.069 252.7)
-
Step 400
400
#6DA4E3
oklch(70.6% 0.11 252.7)
-
Step 500
500
#438CDC
oklch(63.1% 0.141 252.8)
-
Step 600
600
#1E74C9
oklch(55.5% 0.153 252.7)
-
Step 700
700
#0E61AE
oklch(49% 0.143 252.7)
-
Step 800
800 (this color)
#104F8C
oklch(42.4% 0.118 252.5)
-
Step 900
900
#174370
oklch(37.7% 0.091 252)
-
Step 950
950
#0F2742
oklch(26.9% 0.059 253.1)
#104F8C 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) | #30548E | 0.031 |
| Deuteranopia (no green cones) | #18498B | 0.017 |
| Tritanopia (no blue cones) | #005E66 | 0.088 |
| Achromatopsia (no color) | #4E4E4E | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104F8C
#104F8C
oklch(42.4% 0.118 252.5)
- #6C4500
#6C4500
oklch(42.5% 0.091 72.8)
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 #104F8C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.014
- Dusk Blue #26538D ΔE 0.021
- Cobalt #1E488F ΔE 0.022
- Deep Sea Blue #015482 ΔE 0.025
- Light Navy Blue #2E5A88 ΔE 0.044
- Twilight Blue #0A437A ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.055
- Twilight #4E518B ΔE 0.066
Use #104F8C 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.