#045F4A
Closest named color: Dark Green Blue (#1F6357). oklch(43.3% 0.084 170.7), rgb(4, 95, 74).
Aa
White text reads best on this color (7.66:1).
About this color
#045F4A is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 43%, its chroma 0.084 and its hue 171°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.027 away. White text reads best on it, at 7.66:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.74:1 |
| White text | 7.66:1 |
Values
| HEX | #045F4A |
| RGB | rgb(4, 95, 74) |
| HSL | hsl(166, 92%, 19%) |
| OKLCH | oklch(43.3% 0.084 170.7) |
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 #045F4A | 7.66:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #045F4A | 2.74:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #045F4A text on white | 7.66:1 | AAA | Lc 86.1 | Fine for body text |
| #045F4A text on black | 2.74:1 | Fails | Lc -15.9 | Dividers and decoration only |
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
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDE8
oklch(93.6% 0.014 169.2)
-
Step 200
200
#C8DFD6
oklch(88.4% 0.027 170.2)
-
Step 300
300
#A2CBBC
oklch(80.8% 0.048 170.8)
-
Step 400
400
#6CB19A
oklch(70.8% 0.078 170.7)
-
Step 500
500
#3D9D81
oklch(63.1% 0.1 170.7)
-
Step 600
600
#03876A
oklch(55.5% 0.108 170.7)
-
Step 700
700
#007259
oklch(49.1% 0.097 170.7)
-
Step 800
800 (this color)
#045F4A
oklch(43.3% 0.084 170.7)
-
Step 900
900
#124D3D
oklch(37.8% 0.066 170.8)
-
Step 950
950
#0D2D24
oklch(27% 0.041 171.7)
#045F4A 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) | #5C5849 | 0.086 |
| Deuteranopia (no green cones) | #51504B | 0.082 |
| Tritanopia (no blue cones) | #006059 | 0.024 |
| Achromatopsia (no color) | #535353 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045F4A
#045F4A
oklch(43.3% 0.084 170.7)
- #723C56
#723C56
oklch(43.2% 0.083 350.9)
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 #045F4A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.027
- Spruce #0A5F38 ΔE 0.028
- Pine #2B5D34 ΔE 0.034
- Dark Blue Green #005249 ΔE 0.044
- Deep Teal #00555A ΔE 0.049
- Petrol #005F6A ΔE 0.054
- Dark Aqua #05696B ΔE 0.055
- Dark Slate Gray #2F4F4F ΔE 0.060
Use #045F4A 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.