#123741
Closest named color: Midnight Green (#073B4C). oklch(31.5% 0.045 218.7), rgb(18, 55, 65).
Aa
White text reads best on this color (12.73:1).
About this color
#123741 is a dark, muted teal or cyan. In OKLCH its lightness is 32%, its chroma 0.045 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.021 away. White text reads best on it, at 12.73:1.
| Hue family | Teals and cyans |
| Lightness | dark (32%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.64:1 |
| White text | 12.73:1 |
Values
| HEX | #123741 |
| RGB | rgb(18, 55, 65) |
| HSL | hsl(193, 57%, 16%) |
| OKLCH | oklch(31.5% 0.045 218.7) |
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 #123741 | 12.73:1 | AAA | Lc -102.0 | Preferred for body text |
| Black text on #123741 | 1.64:1 | Fails | Lc 0.0 | Not readable |
| #123741 text on white | 12.73:1 | AAA | Lc 98.6 | Preferred for body text |
| #123741 text on black | 1.64:1 | 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 950.
-
Step 50
50
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DFEDF1
oklch(93.7% 0.016 216.7)
-
Step 200
200
#C4DEE6
oklch(88.4% 0.03 218.2)
-
Step 300
300
#9AC9D8
oklch(80.8% 0.054 219.4)
-
Step 400
400
#5DAEC4
oklch(70.8% 0.085 217.6)
-
Step 500
500
#1999B6
oklch(63.2% 0.109 218.5)
-
Step 600
600
#00819B
oklch(55.7% 0.1 218.5)
-
Step 700
700
#006C82
oklch(49.1% 0.088 218.4)
-
Step 800
800
#00596B
oklch(42.8% 0.077 217.7)
-
Step 900
900
#004A5A
oklch(37.8% 0.068 218.5)
-
Step 950
950 (this color)
#123741
oklch(31.5% 0.045 218.7)
#123741 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) | #313542 | 0.039 |
| Deuteranopia (no green cones) | #2A3041 | 0.035 |
| Tritanopia (no blue cones) | #003A3A | 0.022 |
| Achromatopsia (no color) | #323232 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #123741
#123741
oklch(31.5% 0.045 218.7)
- #452920
#452920
oklch(31.4% 0.045 38.6)
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 #123741, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.021
- Dark Blue Grey #1F3B4D ΔE 0.028
- Gunmetal #293241 ΔE 0.030
- Space Cadet #2B2D42 ΔE 0.044
- Prussian Blue #1D3557 ΔE 0.045
- Onyx #343A40 ΔE 0.045
- Oxford Blue #1B263B ΔE 0.057
- Charcoal #264653 ΔE 0.060
Use #123741 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.