#045F37
Closest named color: Spruce (#0A5F38). oklch(42.8% 0.101 156.4), rgb(4, 95, 55).
Aa
White text reads best on this color (7.78:1).
About this color
#045F37 is a dark, moderately saturated green. In OKLCH its lightness is 43%, its chroma 0.101 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Spruce (#0A5F38), ΔE 0.003 away. White text reads best on it, at 7.78:1.
| Hue family | Greens |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Spruce (#0A5F38) |
| Black text | 2.69:1 |
| White text | 7.78:1 |
Values
| HEX | #045F37 |
| RGB | rgb(4, 95, 55) |
| HSL | hsl(154, 92%, 19%) |
| OKLCH | oklch(42.8% 0.101 156.4) |
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 #045F37 | 7.78:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #045F37 | 2.69:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #045F37 text on white | 7.78:1 | AAA | Lc 86.5 | Fine for body text |
| #045F37 text on black | 2.69:1 | Fails | Lc -15.6 | 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
#F1F7F3
oklch(97.1% 0.008 157.1)
-
Step 100
100
#E1EDE5
oklch(93.5% 0.017 156.9)
-
Step 200
200
#C9E0D0
oklch(88.5% 0.033 155.3)
-
Step 300
300
#A2CDB1
oklch(81% 0.06 156.3)
-
Step 400
400
#6DB288
oklch(70.6% 0.094 156.3)
-
Step 500
500
#3E9F6A
oklch(63.1% 0.122 156.2)
-
Step 600
600
#098952
oklch(55.5% 0.131 156.5)
-
Step 700
700
#007443
oklch(49.1% 0.119 156.1)
-
Step 800
800 (this color)
#045F37
oklch(42.8% 0.101 156.4)
-
Step 900
900
#134E30
oklch(37.8% 0.079 156.6)
-
Step 950
950
#0E2E1C
oklch(27.1% 0.051 156)
#045F37 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) | #5E5634 | 0.091 |
| Deuteranopia (no green cones) | #554F3A | 0.091 |
| Tritanopia (no blue cones) | #005E55 | 0.049 |
| Achromatopsia (no color) | #525252 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #045F37
#045F37
oklch(42.8% 0.101 156.4)
- #713764
#713764
oklch(42.8% 0.102 336.4)
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 #045F37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Spruce #0A5F38 ΔE 0.003
- Pine #2B5D34 ΔE 0.021
- Deep Green #02590F ΔE 0.044
- Forest #0B5509 ΔE 0.051
- Navy Green #35530A ΔE 0.052
- Dark Green Blue #1F6357 ΔE 0.052
- Dark Green #006400 ΔE 0.056
- Dark Blue Green #005249 ΔE 0.060
Use #045F37 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.