#1C3C4A
Closest named color: Dark Blue Grey (#1F3B4D). oklch(33.8% 0.045 228.7), rgb(28, 60, 74).
Aa
White text reads best on this color (11.70:1).
About this color
#1C3C4A is a dark, muted teal or cyan. In OKLCH its lightness is 34%, its chroma 0.045 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.008 away. White text reads best on it, at 11.70:1.
| Hue family | Teals and cyans |
| Lightness | dark (34%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.79:1 |
| White text | 11.70:1 |
Values
| HEX | #1C3C4A |
| RGB | rgb(28, 60, 74) |
| HSL | hsl(198, 45%, 20%) |
| OKLCH | oklch(33.8% 0.045 228.7) |
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 #1C3C4A | 11.70:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #1C3C4A | 1.79:1 | Fails | Lc 0.0 | Not readable |
| #1C3C4A text on white | 11.70:1 | AAA | Lc 96.8 | Preferred for body text |
| #1C3C4A text on black | 1.79:1 | Fails | Lc 0.0 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CDDCE3
oklch(88.5% 0.019 227.3)
-
Step 300
300
#ABC5D2
oklch(80.8% 0.034 229.4)
-
Step 400
400
#7EA8BC
oklch(70.8% 0.054 228.8)
-
Step 500
500
#5B92AB
oklch(63.1% 0.069 228.7)
-
Step 600
600
#3F7C96
oklch(55.6% 0.075 228.1)
-
Step 700
700
#316880
oklch(49% 0.069 229.1)
-
Step 800
800
#295568
oklch(42.7% 0.058 228.5)
-
Step 900
900 (this color)
#1C3C4A
oklch(33.8% 0.045 228.7)
-
Step 950
950
#172932
oklch(27% 0.029 231)
#1C3C4A 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) | #353B4B | 0.033 |
| Deuteranopia (no green cones) | #2E364A | 0.029 |
| Tritanopia (no blue cones) | #004041 | 0.031 |
| Achromatopsia (no color) | #383838 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C3C4A
#1C3C4A
oklch(33.8% 0.045 228.7)
- #4B3022
#4B3022
oklch(33.8% 0.046 48.1)
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 #1C3C4A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.008
- Midnight Green #073B4C ΔE 0.017
- Onyx #343A40 ΔE 0.033
- Gunmetal #293241 ΔE 0.034
- Charcoal #264653 ΔE 0.037
- Prussian Blue #1D3557 ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.044
- Space Cadet #2B2D42 ΔE 0.049
Use #1C3C4A 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.