#004758
Closest named color: Charcoal (#264653). oklch(36.8% 0.067 220.6), rgb(0, 71, 88).
Aa
White text reads best on this color (10.28:1).
About this color
#004758 is a dark, muted teal or cyan. In OKLCH its lightness is 37%, its chroma 0.067 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.025 away. White text reads best on it, at 10.28:1.
| Hue family | Teals and cyans |
| Lightness | dark (37%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.04:1 |
| White text | 10.28:1 |
Values
| HEX | #004758 |
| RGB | rgb(0, 71, 88) |
| HSL | hsl(192, 100%, 17%) |
| OKLCH | oklch(36.8% 0.067 220.6) |
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 #004758 | 10.28:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #004758 | 2.04:1 | Fails | Lc 10.5 | Not readable |
| #004758 text on white | 10.28:1 | AAA | Lc 93.4 | Preferred for body text |
| #004758 text on black | 2.04:1 | Fails | Lc -9.1 | 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
#F1F7F9
oklch(97.2% 0.007 219.6)
-
Step 100
100
#E0ECF1
oklch(93.6% 0.015 224.5)
-
Step 200
200
#C6DEE6
oklch(88.5% 0.028 219.8)
-
Step 300
300
#9DC9D8
oklch(81% 0.051 220.7)
-
Step 400
400
#63ADC4
oklch(70.8% 0.081 220.1)
-
Step 500
500
#2B97B5
oklch(63% 0.103 221)
-
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)
#004758
oklch(36.8% 0.067 220.6)
-
Step 950
950
#082B35
oklch(27% 0.043 220.9)
#004758 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) | #3D4559 | 0.055 |
| Deuteranopia (no green cones) | #323D58 | 0.049 |
| Tritanopia (no blue cones) | #004C4C | 0.031 |
| Achromatopsia (no color) | #414141 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #004758
#004758
oklch(36.8% 0.067 220.6)
- #5D3222
#5D3222
oklch(36.8% 0.068 40.9)
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 #004758, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.025
- Dark Grey Blue #29465B ΔE 0.030
- Dark Teal #014D4E ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.040
- Midnight Green #073B4C ΔE 0.041
- Deep Teal #00555A ΔE 0.047
- Dark Slate Gray #2F4F4F ΔE 0.050
- Dark Blue Green #005249 ΔE 0.052
Use #004758 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.