#437897
Closest named color: Cerulean (#457B9D). oklch(54.9% 0.075 236), rgb(67, 120, 151).
Aa
White text reads best on this color (4.80:1).
About this color
#437897 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.075 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.012 away. White text reads best on it, at 4.80:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.37:1 |
| White text | 4.80:1 |
Values
| HEX | #437897 |
| RGB | rgb(67, 120, 151) |
| HSL | hsl(202, 39%, 43%) |
| OKLCH | oklch(54.9% 0.075 236) |
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 #437897 | 4.80:1 | AA | Lc -78.6 | Fine for body text |
| Black text on #437897 | 4.37:1 | AA large text | Lc 30.9 | Non-text elements, placeholder text |
| #437897 text on white | 4.80:1 | AA | Lc 73.2 | Content text, not long reading |
| #437897 text on black | 4.37:1 | AA large text | Lc -28.5 | 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 600.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDBE4
oklch(88.4% 0.019 237.8)
-
Step 300
300
#ADC5D4
oklch(81% 0.034 235.3)
-
Step 400
400
#81A6BE
oklch(70.6% 0.054 237)
-
Step 500
500
#6090AE
oklch(63.1% 0.069 236.8)
-
Step 600
600 (this color)
#437897
oklch(54.9% 0.075 236)
-
Step 700
700
#366783
oklch(49.2% 0.07 235.6)
-
Step 800
800
#2E546A
oklch(42.7% 0.057 235.6)
-
Step 900
900
#294556
oklch(37.6% 0.045 236.3)
-
Step 950
950
#192932
oklch(27.1% 0.027 233.8)
#437897 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) | #6A7799 | 0.047 |
| Deuteranopia (no green cones) | #5E6E97 | 0.040 |
| Tritanopia (no blue cones) | #028082 | 0.059 |
| Achromatopsia (no color) | #727272 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #437897
#437897
oklch(54.9% 0.075 236)
- #936645
#936645
oklch(55% 0.075 56.7)
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 #437897, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.012
- Dull Blue #49759C ΔE 0.015
- Stormy Blue #507B9C ΔE 0.019
- Metallic Blue #4F738E ΔE 0.019
- Muted Blue #3B719F ΔE 0.029
- Flat Blue #3C73A8 ΔE 0.035
- Ocean #017B92 ΔE 0.037
- Sea Blue #047495 ΔE 0.040
Use #437897 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.