#1D4E61
Closest named color: Dark Grey Blue (#29465B). oklch(40% 0.061 227), rgb(29, 78, 97).
Aa
White text reads best on this color (9.07:1).
About this color
#1D4E61 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.061 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.026 away. White text reads best on it, at 9.07:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.31:1 |
| White text | 9.07:1 |
Values
| HEX | #1D4E61 |
| RGB | rgb(29, 78, 97) |
| HSL | hsl(197, 54%, 25%) |
| OKLCH | oklch(40% 0.061 227) |
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 #1D4E61 | 9.07:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #1D4E61 | 2.31:1 | Fails | Lc 13.3 | Not readable |
| #1D4E61 text on white | 9.07:1 | AAA | Lc 90.7 | Preferred for body text |
| #1D4E61 text on black | 2.31:1 | Fails | Lc -11.7 | Not readable |
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 900.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE6
oklch(88.5% 0.025 226.5)
-
Step 300
300
#A2C7D8
oklch(80.8% 0.046 227.5)
-
Step 400
400
#6EAAC4
oklch(70.7% 0.073 227.3)
-
Step 500
500
#4295B5
oklch(63.2% 0.093 226.5)
-
Step 600
600
#177EA1
oklch(55.5% 0.102 227.3)
-
Step 700
700
#016B8A
oklch(49.2% 0.094 226.6)
-
Step 800
800
#0C5770
oklch(42.7% 0.078 227)
-
Step 900
900 (this color)
#1D4E61
oklch(40% 0.061 227)
-
Step 950
950
#0F2A35
oklch(27% 0.038 227.5)
#1D4E61 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) | #444C62 | 0.046 |
| Deuteranopia (no green cones) | #3A4561 | 0.040 |
| Tritanopia (no blue cones) | #005454 | 0.037 |
| Achromatopsia (no color) | #494949 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D4E61
#1D4E61
oklch(40% 0.061 227)
- #633D2A
#633D2A
oklch(40% 0.062 47)
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 #1D4E61, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.026
- Charcoal #264653 ΔE 0.030
- Deep Teal #00555A ΔE 0.031
- Dark Slate Gray #2F4F4F ΔE 0.035
- Dark Teal #014D4E ΔE 0.038
- Dark Blue Green #005249 ΔE 0.051
- Petrol #005F6A ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.054
Use #1D4E61 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.