#104D51
Closest named color: Dark Teal (#014D4E). oklch(38.5% 0.059 201.6), rgb(16, 77, 81).
Aa
White text reads best on this color (9.53:1).
About this color
#104D51 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.059 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Teal (#014D4E), ΔE 0.009 away. White text reads best on it, at 9.53:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Dark Teal (#014D4E) |
| Black text | 2.20:1 |
| White text | 9.53:1 |
Values
| HEX | #104D51 |
| RGB | rgb(16, 77, 81) |
| HSL | hsl(184, 67%, 19%) |
| OKLCH | oklch(38.5% 0.059 201.6) |
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 #104D51 | 9.53:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #104D51 | 2.20:1 | Fails | Lc 12.2 | Not readable |
| #104D51 text on white | 9.53:1 | AAA | Lc 91.8 | Preferred for body text |
| #104D51 text on black | 2.20:1 | Fails | Lc -10.6 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1EDED
oklch(93.7% 0.013 196.9)
-
Step 200
200
#C7DEE0
oklch(88.4% 0.025 203.1)
-
Step 300
300
#A0CACD
oklch(81% 0.044 201.7)
-
Step 400
400
#68AEB3
oklch(70.7% 0.071 201.6)
-
Step 500
500
#369AA0
oklch(63.2% 0.091 200.8)
-
Step 600
600
#00838B
oklch(55.5% 0.095 202.3)
-
Step 700
700
#006E75
oklch(49% 0.083 202.5)
-
Step 800
800
#005A60
oklch(42.6% 0.073 202.7)
-
Step 900
900 (this color)
#104D51
oklch(38.5% 0.059 201.6)
-
Step 950
950
#0B2C2E
oklch(27% 0.038 200.8)
#104D51 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) | #464951 | 0.059 |
| Deuteranopia (no green cones) | #3D4251 | 0.056 |
| Tritanopia (no blue cones) | #00504E | 0.014 |
| Achromatopsia (no color) | #454545 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #104D51
#104D51
oklch(38.5% 0.059 201.6)
- #603736
#603736
oklch(38.7% 0.059 21.6)
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 #104D51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Teal #014D4E ΔE 0.009
- Dark Blue Green #005249 ΔE 0.026
- Deep Teal #00555A ΔE 0.026
- Dark Slate Gray #2F4F4F ΔE 0.028
- Charcoal #264653 ΔE 0.028
- Dark Grey Blue #29465B ΔE 0.038
- Charcoal Grey #3C4142 ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.059
Use #104D51 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.