#045C4F
Closest named color: Dark Green Blue (#1F6357). oklch(42.6% 0.077 178.6), rgb(4, 92, 79).
Aa
White text reads best on this color (7.92:1).
About this color
#045C4F is a dark, moderately saturated teal or cyan. In OKLCH its lightness is 43%, its chroma 0.077 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.029 away. White text reads best on it, at 7.92:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.64:1 |
| White text | 7.92:1 |
Values
| HEX | #045C4F |
| RGB | rgb(4, 92, 79) |
| HSL | hsl(171, 92%, 19%) |
| OKLCH | oklch(42.6% 0.077 178.6) |
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 #045C4F | 7.92:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #045C4F | 2.64:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #045C4F text on white | 7.92:1 | AAA | Lc 87.0 | Fine for body text |
| #045C4F text on black | 2.64:1 | Fails | Lc -15.1 | 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
#E1EDEA
oklch(93.6% 0.013 179.5)
-
Step 200
200
#C9DFD9
oklch(88.6% 0.025 177.6)
-
Step 300
300
#A2CBC1
oklch(81% 0.046 178.6)
-
Step 400
400
#6DB0A1
oklch(70.8% 0.072 178.3)
-
Step 500
500
#3F9C8A
oklch(63.2% 0.092 178.3)
-
Step 600
600
#0C8674
oklch(55.6% 0.1 178.6)
-
Step 700
700
#007161
oklch(49.1% 0.09 178.4)
-
Step 800
800 (this color)
#045C4F
oklch(42.6% 0.077 178.6)
-
Step 900
900
#144C42
oklch(37.8% 0.06 178.6)
-
Step 950
950
#0E2C27
oklch(26.9% 0.037 180.8)
#045C4F 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) | #58564E | 0.081 |
| Deuteranopia (no green cones) | #4D4E50 | 0.077 |
| Tritanopia (no blue cones) | #005E58 | 0.014 |
| Achromatopsia (no color) | #515151 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045C4F
#045C4F
oklch(42.6% 0.077 178.6)
- #703C4E
#703C4E
oklch(42.6% 0.076 358.7)
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 #045C4F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.029
- Dark Blue Green #005249 ΔE 0.033
- Deep Teal #00555A ΔE 0.034
- Spruce #0A5F38 ΔE 0.040
- Petrol #005F6A ΔE 0.044
- Pine #2B5D34 ΔE 0.045
- Dark Slate Gray #2F4F4F ΔE 0.048
- Dark Teal #014D4E ΔE 0.051
Use #045C4F 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.