#104F6D
Closest named color: Deep Sea Blue (#015482). oklch(40.5% 0.078 235), rgb(16, 79, 109).
Aa
White text reads best on this color (8.89:1).
About this color
#104F6D is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.078 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.035 away. White text reads best on it, at 8.89:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.36:1 |
| White text | 8.89:1 |
Values
| HEX | #104F6D |
| RGB | rgb(16, 79, 109) |
| HSL | hsl(199, 74%, 25%) |
| OKLCH | oklch(40.5% 0.078 235) |
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 #104F6D | 8.89:1 | AAA | Lc -94.5 | Preferred for body text |
| Black text on #104F6D | 2.36:1 | Fails | Lc 14.0 | Not readable |
| #104F6D text on white | 8.89:1 | AAA | Lc 90.0 | Preferred for body text |
| #104F6D text on black | 2.36:1 | Fails | Lc -12.3 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCE8
oklch(88.5% 0.025 236.9)
-
Step 300
300
#A5C6DA
oklch(80.9% 0.045 234.7)
-
Step 400
400
#73A8C8
oklch(70.6% 0.073 235.7)
-
Step 500
500
#4A92BA
oklch(63% 0.094 235.3)
-
Step 600
600
#287CA6
oklch(55.6% 0.102 235)
-
Step 700
700
#19688E
oklch(49% 0.094 235.1)
-
Step 800
800 (this color)
#104F6D
oklch(40.5% 0.078 235)
-
Step 900
900
#1C475D
oklch(37.8% 0.06 233.9)
-
Step 950
950
#122937
oklch(26.9% 0.039 237.4)
#104F6D 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) | #404F6E | 0.047 |
| Deuteranopia (no green cones) | #34466D | 0.039 |
| Tritanopia (no blue cones) | #005759 | 0.049 |
| Achromatopsia (no color) | #4A4A4A | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104F6D
#104F6D
oklch(40.5% 0.078 235)
- #693C1B
#693C1B
oklch(40.4% 0.078 54.5)
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 #104F6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.038
- Light Navy #155084 ΔE 0.039
- Deep Teal #00555A ΔE 0.043
- Charcoal #264653 ΔE 0.046
- Twilight Blue #0A437A ΔE 0.048
- Petrol #005F6A ΔE 0.053
- Dark Teal #014D4E ΔE 0.055
Use #104F6D 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.