#104A63
Closest named color: Dark Grey Blue (#29465B). oklch(38.6% 0.071 232), rgb(16, 74, 99).
Aa
White text reads best on this color (9.62:1).
About this color
#104A63 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.071 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.023 away. White text reads best on it, at 9.62:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.18:1 |
| White text | 9.62:1 |
Values
| HEX | #104A63 |
| RGB | rgb(16, 74, 99) |
| HSL | hsl(198, 72%, 23%) |
| OKLCH | oklch(38.6% 0.071 232) |
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 #104A63 | 9.62:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #104A63 | 2.18:1 | Fails | Lc 12.0 | Not readable |
| #104A63 text on white | 9.62:1 | AAA | Lc 92.0 | Preferred for body text |
| #104A63 text on black | 2.18:1 | Fails | Lc -10.4 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E0ECF2
oklch(93.6% 0.015 229)
-
Step 200
200
#C7DDEA
oklch(88.5% 0.03 233.6)
-
Step 300
300
#9FC7DD
oklch(80.8% 0.053 232.3)
-
Step 400
400
#67AACD
oklch(70.7% 0.085 232.5)
-
Step 500
500
#3594C0
oklch(63% 0.109 232.5)
-
Step 600
600
#007EAA
oklch(55.7% 0.113 231.8)
-
Step 700
700
#006A8F
oklch(49.2% 0.1 231.3)
-
Step 800
800
#005676
oklch(42.6% 0.087 232.3)
-
Step 900
900 (this color)
#104A63
oklch(38.6% 0.071 232)
-
Step 950
950
#0B2A38
oklch(27% 0.044 231.3)
#104A63 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) | #3D4964 | 0.046 |
| Deuteranopia (no green cones) | #324163 | 0.040 |
| Tritanopia (no blue cones) | #005152 | 0.043 |
| Achromatopsia (no color) | #454545 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104A63
#104A63
oklch(38.6% 0.071 232)
- #61381E
#61381E
oklch(38.5% 0.07 51.7)
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 #104A63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.023
- Charcoal #264653 ΔE 0.029
- Dark Teal #014D4E ΔE 0.042
- Deep Teal #00555A ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.049
- Twilight Blue #0A437A ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.053
- Deep Sea Blue #015482 ΔE 0.055
Use #104A63 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.