#1B604C
Closest named color: Dark Green Blue (#1F6357). oklch(44.1% 0.076 169.7), rgb(27, 96, 76).
Aa
White text reads best on this color (7.43:1).
About this color
#1B604C is a dark, moderately saturated green. In OKLCH its lightness is 44%, its chroma 0.076 and its hue 170°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.019 away. White text reads best on it, at 7.43:1.
| Hue family | Greens |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.076) |
| Temperature | in between |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.82:1 |
| White text | 7.43:1 |
Values
| HEX | #1B604C |
| RGB | rgb(27, 96, 76) |
| HSL | hsl(163, 56%, 24%) |
| OKLCH | oklch(44.1% 0.076 169.7) |
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 #1B604C | 7.43:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #1B604C | 2.82:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #1B604C text on white | 7.43:1 | AAA | Lc 85.6 | Fine for body text |
| #1B604C text on black | 2.82:1 | Fails | Lc -16.5 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE8
oklch(93.6% 0.013 167.2)
-
Step 200
200
#CADFD6
oklch(88.5% 0.026 168.2)
-
Step 300
300
#A5CABC
oklch(80.8% 0.044 170.2)
-
Step 400
400
#73AF9A
oklch(70.7% 0.07 170.2)
-
Step 500
500
#499B81
oklch(63.1% 0.09 170.1)
-
Step 600
600
#24866A
oklch(55.7% 0.099 169.4)
-
Step 700
700
#147158
oklch(49.1% 0.092 169.5)
-
Step 800
800 (this color)
#1B604C
oklch(44.1% 0.076 169.7)
-
Step 900
900
#1B4C3D
oklch(37.8% 0.059 169.9)
-
Step 950
950
#112C23
oklch(26.9% 0.037 169.3)
#1B604C 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) | #5D594B | 0.077 |
| Deuteranopia (no green cones) | #54524D | 0.075 |
| Tritanopia (no blue cones) | #00615A | 0.022 |
| Achromatopsia (no color) | #555555 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B604C
#1B604C
oklch(44.1% 0.076 169.7)
- #724059
#724059
oklch(44% 0.077 349.4)
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 #1B604C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.019
- Spruce #0A5F38 ΔE 0.033
- Pine #2B5D34 ΔE 0.033
- Dark Aqua #05696B ΔE 0.049
- Dark Blue Green #005249 ΔE 0.050
- Petrol #005F6A ΔE 0.051
- Deep Teal #00555A ΔE 0.051
- Dark Slate Gray #2F4F4F ΔE 0.059
Use #1B604C 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.