#104A5A
Closest named color: Charcoal (#264653). oklch(38.1% 0.063 220.9), rgb(16, 74, 90).
Aa
White text reads best on this color (9.77:1).
About this color
#104A5A is a dark, muted teal or cyan. In OKLCH its lightness is 38%, its chroma 0.063 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.020 away. White text reads best on it, at 9.77:1.
| Hue family | Teals and cyans |
| Lightness | dark (38%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.14:1 |
| White text | 9.77:1 |
Values
| HEX | #104A5A |
| RGB | rgb(16, 74, 90) |
| HSL | hsl(193, 70%, 21%) |
| OKLCH | oklch(38.1% 0.063 220.9) |
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 #104A5A | 9.77:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #104A5A | 2.14:1 | Fails | Lc 11.6 | Not readable |
| #104A5A text on white | 9.77:1 | AAA | Lc 92.4 | Preferred for body text |
| #104A5A text on black | 2.14:1 | Fails | Lc -10.1 | 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
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C7DEE5
oklch(88.6% 0.026 218)
-
Step 300
300
#A0C8D6
oklch(80.9% 0.047 221.2)
-
Step 400
400
#69ACC2
oklch(70.8% 0.075 221)
-
Step 500
500
#3897B2
oklch(63.2% 0.096 220.3)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900 (this color)
#104A5A
oklch(38.1% 0.063 220.9)
-
Step 950
950
#0C2B34
oklch(27.1% 0.04 220.3)
#104A5A 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) | #40485B | 0.051 |
| Deuteranopia (no green cones) | #36415A | 0.045 |
| Tritanopia (no blue cones) | #004F4F | 0.030 |
| Achromatopsia (no color) | #444444 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104A5A
#104A5A
oklch(38.1% 0.063 220.9)
- #5F3728
#5F3728
oklch(38.2% 0.063 41.2)
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 #104A5A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.020
- Dark Grey Blue #29465B ΔE 0.023
- Dark Teal #014D4E ΔE 0.027
- Deep Teal #00555A ΔE 0.036
- Dark Slate Gray #2F4F4F ΔE 0.039
- Dark Blue Green #005249 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.048
- Midnight Green #073B4C ΔE 0.052
Use #104A5A 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.