#1B634F
Closest named color: Dark Green Blue (#1F6357). oklch(45% 0.077 170.5), rgb(27, 99, 79).
Aa
White text reads best on this color (7.13:1).
About this color
#1B634F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 45%, its chroma 0.077 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.014 away. White text reads best on it, at 7.13:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.94:1 |
| White text | 7.13:1 |
Values
| HEX | #1B634F |
| RGB | rgb(27, 99, 79) |
| HSL | hsl(163, 57%, 25%) |
| OKLCH | oklch(45% 0.077 170.5) |
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 #1B634F | 7.13:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #1B634F | 2.94:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #1B634F text on white | 7.13:1 | AAA | Lc 84.4 | Fine for body text |
| #1B634F text on black | 2.94:1 | Fails | Lc -17.5 | 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
#CADFD7
oklch(88.6% 0.025 170.9)
-
Step 300
300
#A4CBBC
oklch(81% 0.046 169.7)
-
Step 400
400
#71B09A
oklch(70.8% 0.073 170.1)
-
Step 500
500
#469C81
oklch(63.2% 0.093 170)
-
Step 600
600
#1E866B
oklch(55.6% 0.101 170.7)
-
Step 700
700
#0C7159
oklch(49% 0.093 170.8)
-
Step 800
800 (this color)
#1B634F
oklch(45% 0.077 170.5)
-
Step 900
900
#194C3D
oklch(37.8% 0.06 170.4)
-
Step 950
950
#102C24
oklch(26.8% 0.037 172.3)
#1B634F 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) | #605C4E | 0.079 |
| Deuteranopia (no green cones) | #565550 | 0.076 |
| Tritanopia (no blue cones) | #00645D | 0.022 |
| Achromatopsia (no color) | #585858 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B634F
#1B634F
oklch(45% 0.077 170.5)
- #75425B
#75425B
oklch(44.9% 0.078 349.9)
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 #1B634F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.014
- Spruce #0A5F38 ΔE 0.037
- Pine #2B5D34 ΔE 0.038
- Dark Aqua #05696B ΔE 0.043
- Petrol #005F6A ΔE 0.051
- Deep Teal #00555A ΔE 0.057
- Dark Blue Green #005249 ΔE 0.059
- Dark Aquamarine #017371 ΔE 0.062
Use #1B634F 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.